TS Optics 72mm,

Canon 550Da

33x120 Secs, Darks, DeepSkyStacker, Gimp, Lightroom

Date: 2020-09-18

I took this over two nights as typically in the UK you are lucky to get more than a two hour window of opportunity. The conditions weren’t ideal on either night but I did manage to get some usable data, though some was discarded. As usual I remove the stars after the Initial levels adjustment before continuing to process the Oiii, Ha & luminance. I usually only use the Ha stars in my images but this time I decided to make a star only image of both the Oiii and the Ha and combined these to add back in at the end of the processing giving bi-colour stars.

Object Description:-

NGC 6960 (Western Veil), NGC 6979, NGC 6974 & Pickering’s Triangle are part of a larger structure and the remnants of a Supernova which is believed to have taken place between 3000 and 6000BC. It can be found in the constellation of Cygnus at a distance of approximately 1,470 ly with a visual mag of 7.0. The whole object (of which this is only part) covers an area equivalent to 6 times the Dia of the Full Moon. This is a cloud of heated ionized gas and dust, it’s also very rich in Oxygen (Oiii).

EQUIPMENT:-

Explore Scientific 102mm F7 APO Carbon

Explore Scientific 0.7 Focal Reducer

Skywatcher AZ-EQ6 GT

ZWO ASI1600mm-Cool cmos camera

Orion Mini Auto Guide

Astronomik 6nm Ha Filter

Astronomik 6nm Oiii Filter

Chip Temp Cooled to -20 degC

IMAGING DETAILS:-

NGC 6960 Western Veil "Witch's Broom" Nebula (Cygnus)

NGC 6979, NGC 6974 & Pickering's Triangle

Gain 139 (Unit Gain)

40 Ha subs@240sec (2h 40m)

30 Oiii subs@240sec (2h)

Total imaging Time 4.40h

Dithering

20 Darks

20 Flats

PROCESSING/GUIDING SOFTWARE:-

APT "Astro Photograph Tools"

StarNet++

DSS

PS CS2

***Reprocessed Data From 02/10/2022***

For comparison see original here:- flic.kr/p/2nQZxun

I’ve been trying out some of the new processing scripts in Siri, along with refining my workflow. Below are the scrips run from within Siri:-

GraXpert

RC-Astro Tools:-

BlurXTerminator

NoiseXTerminator

StarXTerminator

Object Description:-

NGC 6960 (Western Veil), NGC 6979, NGC 6974 & Pickering’s Triangle are part of a larger structure and the remnants of a Supernova which is believed to have taken place between 3000 and 6000BC. It can be found in the constellation of Cygnus at a distance of approximately 1,470 ly with a visual mag of 7.0. The whole object (of which this is only part) covers an area equivalent to 6 times the Dia of the Full Moon. This is a cloud of heated ionized gas and dust, it’s also very rich in Oxygen (Oiii).

EQUIPMENT:-

Explore Scientific 102mm F7 APO Carbon

Explore Scientific 0.7 Focal Reducer

Skywatcher AZ-EQ6 GT

ZWO ASI1600mm-Cool cmos camera

Orion Mini Auto Guide

Astronomik 6nm Ha Filter

Astronomik 6nm Oiii Filter

Chip Temp Cooled to -20 degC

IMAGING DETAILS:-

NGC 6960 Western Veil "Witch's Broom" Nebula (Cygnus)

NGC 6979, NGC 6974 & Pickering's Triangle

Gain 139 (Unit Gain)

40 Ha subs@240sec (2h 40m)

30 Oiii subs@240sec (2h)

Total imaging Time 4.40h

Dithering

20 Darks

20 Flats

PROCESSING/GUIDING SOFTWARE:-

N.I.N.A

PHD2

DSS

GraXpert AI

RC-Astro XTerminator tools

Siril

Affinity photo 2

150/750 PDS, canon 1100d mod., filtro IDAS LPS D1, autoguiado EZG60+ASI120mm, montura NEQ5 GoTo, 66x300" + 35x600", 30 darks, 40 flats, 250 bias, capturada a principios de septiembre de 2021 cerca de Belmonte, Castilla la Mancha, España

Canon EOS 600Dfs, Samyang 135 mm f/2, F/2.8, ISO-1600, 48x120s on Astrotrac, APP & Adobe Photoshop CC 2020

This latest capture from Grand Mesa Observatory’s system 4 (available on our subscriptions from October 1st) using a QHY367C full frame One Shot Color CMOS camera on a Takahashi E-180 F2.8 Astrograph with a William Optics STC Astro Duo-Narrowband Filter that we are testing for William Optics . This data really took me by surprise, I am very excited to see the level of detail and high transmission the STC provides in the H Alpha and OIII bandwidths especially for a project that was captured in just over 4 hours.

Total Acquisition Time 4.08 hours

Image capture details

By Terry Hancock

Location: GrandMesaObservatory.com Purdy Mesa, Colorado

Dates: 2nd September 2019

Color 245 min, 49 x 300 sec

Camera: QHY367C

Offset 76, Gain 2850 Calibrated with flat, Dark & Bias

Optics: Takahashi E-180 F2.8 Astrograph

Filter: William Optics STC Astro Duo-Narrowband

Mount: Paramount GT1100S

Image Acquisition software Maxim DL6.0

Pre Processed using Pixinsight

Post Processed using Photoshop CC

Some of my previous images of The Cygnus Loop

www.flickr.com/photos/terryhancock/20979326004/in/album-7...

About The Cygnus Loop

Containing many components such as The Eastern & Western Veil Nebulae NGC6960, NGC6992, NGC6995, IC1340, Pickerings Triangle, NGC6974 and NGC6979. Cygnus Loop is a supernova remnant, the expanding cloud of diverse elements created in the most powerful of explosions; a supernova.

As a Massive star nears the end of its life, it runs out of hydrogen fuel and begins fusing helium. After exhausting its supply of helium it begins to fuse heavier elements until finally, the star's core can no longer exert enough outward pressure and it collapses. A shock wave rebounds through the star so fierce that the star is shredded and leaves behind a small but extremely dense body; either a neutron star or a black hole.

The progenitor of this supernova remnant exploded more than 5,000 years ago and over the course of the past 5 millennia, the material has been racing away in all directions. The Cygnus loop now occupies a vast region of sky, equal to 36 full moons!

A Supernova seeds the interstellar medium with all types of heavy elements. In fact, every single atom of elements heavier than iron was created in this type of event, including many in your own body.

Northfield, OH

August 16 & 18, 2023

Equipment--

Telescope: RedCat 51, 250mm focal length

Mount: Sky-Watcher EQ6R-Pro

Camera: ZWO ASI204MC-Pro

Guide scope: Williams Optics 50mm guide scope

Guide camera: ZWO ASI120MM-S

Software: NINA, PHD2

Imaging--

Lights: 35x300s

Darks, Flats, DarkFlats, Bias: assorted

Sensor temp: -10.0

Filter: Optolong L-Pro

Sky: Bortle 6 (nominal)

Post processing--

Software: PixInsight, Photoshop

First attempt at doing a mosaic. Used NINA to capture 2 panels roughly covering nebula, processed and merged in PixInsight.

ZWO ASI2600MC Pro

Skywatcher Esprit 100ED

Each of 2 panels 20x240s

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop, a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago.

Resolution ............... 0.697 arcsec/px

Rotation ................. -3.190 deg

Reference system ......... ICRS

Observation start time ... 2025-08-16 22:27:50 UTC

Observation end time ..... 2025-08-16 23:54:54 UTC

Focal distance ........... 556.19 mm

Pixel size ............... 1.88 um

Field of view ............ 3d 7' 4.2" x 2d 21' 25.6"

Image center ............. RA: 20 51 11.311 Dec: +31 00 00.45

Veil Nebula in Narrowband Bicolour Palette.

All imaging took place at my remote observatory at e-EyE, Spain.

This image comprises 90 hours of exposures in 180 exposures in total, each 30 minutes long. It is a 9-panel mosaic captured purely with narrowband filters.

HA = (10 x 1800s) x 9

OIII = (10 x 1800s) x 9

Equipment and software used:

Mount: Avalon M-Uno

Telescope: Takahashi FSQ-85ED

Camera: QSI 660wsg-8

Autoguider: Starlight Xpress Lodestar X2

Filters: Astrodon Hydrogen-Alpha 3nm and Oxygen-III 3nm

Capture Software: Sequence Generator Pro and PHD2

Processing Software: PixInsight

Had issues with the Zwo ASIair Pro last night

Upside is it worked well with my Ioptron iEQ 45 Pro mount

NGC 6974 & 6960 at the left hand corner

Orion 80mm ED APO refractor 600mm F/7.5

Zwo ASI294MC Pro cooled color camera

Deepskydad EAF

Had clear skies last night, good tracking

Optolong L eNhance filter 2"

Zwo ASIAir Pro, PoleMaster

Ioptron iEQ45 Pro EQ mount, PHD2 guiding

Orion 60mm guidescope Zwo 120MM mini

220 Gain offset 30, 0c cooling,

2 minute each, 2 hours total

45 darks 100 flats and 60 bias frames

Astro Pixel Processor and PS

Dopo aver fotografato la Nebulosa Velo Orientale era opportuno dedicarsi anche alla Velo Occidentale(NGC6960, Sh2-103) che si trova a ridosso di altre nebuose, la più nota chiamata Triangolo di Pickering, che la dividono dalla parte orientale.

Tutti questi componenti che compongono la famosa Nebulosa Velo o Anello del Cigno sono ciò che rimane dell'esplosione di una supernova avvenuta crca 10.000-20.000 anni fa.

Questa nebulosa diffusa, tuttora in espansione, ricchissima di Ha, OIII e S è molto vasta e per fotografarla nel suo insieme occorrono corte focali, ma focali più lunghe permettono di evienziarne gli intrecci e filamenti che la compongono anche se si è costretti, in base alle dimensioni del sensore fotografico, ad inquadrarne solo una parte .

Infatti questa è un mosaico composto da 2 pannelli: a sinistra il Triangolo di Pickering e le nebulose NGC6974 e NGC6979 mentre a destra la NGC6960 sulla quale spicca la stella 52Cyg.

Anche se la Nebulosa Velo è abbastanza luminosa, acquisendo in banda stretta occorrono più sessioni per registrare un discreto segnale; quindi più notti, diversa trasparenza, diverso seeing. E Alla fine non sempre è facile comporre un mosaico: gradienti diversi da inquinamento luminoso, segnale diverso ecc.

Ho cercato con le mie modeste capacità e conoscenze di equilibrare luminosità e colore tra i 2 pannelli e successivamente di estrarre dal fondo cielo anche le nebulosità più tenui. Sono molto soddisfatto del risultato ottenuto e lo dedico al mio caro amico astrofilo e maestro di elaborazione Piero Lavoratti di Pistoia (www.aavapieri.org/piero/ciao.htm) che in questo mese ha compiuto 90 anni: auguri Piero!!!

________

After photographing the Eastern Veil Nebula, it was appropriate to also focus on the Western Veil Nebula (NGC6960, Sh2-103), which is located close to other nebulae, the most famous of which is called Pickering's Triangle, which separate it from the eastern part.

All these components that make up the famous Veil Nebula or Cygnus Loop are the remains of a supernova explosion that occurred approximately 10,000-20,000 years ago.

This diffuse nebula, still expanding, rich in Ha, OIII, and S, is very large. Photographing it as a whole requires short focal lengths, but longer focal lengths allow you to highlight its interweavings and filaments, even if you're limited to capturing only a portion of it, depending on the size of your camera sensor.

In fact, this is a mosaic composed of two panels: on the left, Pickering's Triangle and the nebulae NGC6974 and NGC6979, and on the right, NGC6960, which features the star 52Cyg.

Although the Veil Nebula is quite bright, acquiring in narrowband requires multiple sessions to record a decent signal; therefore, multiple nights, different transparency, different seeing. And ultimately, it's not always easy to compose a mosaic: different gradients from light pollution, different signals, etc.

I tried, with my modest skills and knowledge, to balance brightness and color between the two panels and then extract even the faintest nebulosity from the background sky.I am very satisfied with the result obtained and I dedicate it to my dear friend, amateur astronomer and processing master Piero Lavoratti from Pistoia (www.aavapieri.org/piero/ciao.htm), who turned 90 this month: happy birthday Piero!!!

_______________

Optic: APO Refractor Askar 103APO + 0.6X

Camera: ZWO ASI533MC-Pro

Mount: Sky Watcher HEQ5 Synscan

Seeing: 3-4 (scala Antoniadi)

Filter: Narrowband Optolong L-eNhance 2" + SVbony UV-IR cut

panel1 (NGC6979) -129x300s 250gain/ 35dark /21flat / 21darkflat /80 bias

Integration: 10h 45m

Date: 2025-09-06,15,16

panel2 (NGC6960) -105x300s 250gain/ 35dark /21flat / 21darkflat /80 bias

Integration: 8h 45m

Date: 2025-09-19,21

t° sensor: -5°C

Total integration: 19h 30m

Temperature: 20°C (media)

location for : Biancavilla -Catania-(Italy) 515m slm (Bortle 5-6)

Acquisition: NINA, PHDGuiding

Processing: DSS, SIRIL 1.4, PS, GraXpert

The arcs and wisps of the Veil Nebula supernova remnant in Cygnus, framed with the open star cluster NGC 6940 in Vulpecula at lower right. The area is marked by a sharp transition between clear starry sky in the Millky Way and brownish-yellow areas obscured by interstellar dust with fewer stars visible. The nebula colours show up well despite this being a "stock" camera, with no filters employed.

The field of view is about 7.5° by 5°, similar to binoculars.

This is a stack of 8 x 5-minute exposures with the Sharpstar 61 EDPH III apo refractor and its 0.75x Reducer for f/4.4, and the old Canon 6D DSLR at ISO 800, all on the ZWO AM5 mount autoguided with the ASIAir, as a test of the combination of gear. Taken June 26/27, 2023 just after local moonset though the sky so near solstice was not astronomically dark. No filter employed and the camera is not modified.

The Veil Nebula NGC6979 and NGC6974.

This is my first attempt at processing Pickering's Triangle, a segment of the Veil Nebula, using data from iTelescope's new Delta Rho 500 f/3 (T26) in Utah. The data was provided as part of my subscription plan; as such, it was limited to 2 x 600s HA, SII, and OIII files already calibrated, giving a one-hour integration time.

The files were first integrated using AstroPixelProcessor, then processed using PixInsight, with a final tweak using Photoshop to bring out a little more contrast.

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint supernova remnant. The source supernova exploded circa 3,000 BC to 6,000 BC, and the remnants have since expanded to cover an area roughly 3 degrees in diameter. The distance to the nebula is not precisely known, but Far Ultraviolet Spectroscopic Explorer (FUSE) data supports a distance of about 1,470 light-years. (en.wikipedia.org/wiki/Veil_Nebula)

22 hrs RGB captured for this 2 panel Mosaic between 17 april and 18 June 2018 with Esprit 100 refractor/QHY16200 @-20C. Stacking/mosaic in AstroPixelProcessor, further processing in Pixinsight.

Knight Observatory, Tomar

[Explore 20180703]

The Veil Nebula is a supernova remnant located 2,100 lightyears away in the Cygnus constellation that spans 110 lightyears across. This image contains the Eastern Veil, also known as NGC 6992 and Caldwell 33 and contains NGC 6995, or the Bat Nebula. Also in this image are NGC6974 and NGC6979 (bottom right)

Aug 2021 and August 2022

Celestron RASA 8"

ZWO183mc pro

ZWO EAF

IDAS NBZ filter

ZWO air pro

Sky-Watcher HEQ5 Pro

3 hours of lights at 60s Lights. Flats , Darks and Bias.

Gain 122 at -10C

Processed in APP and Pixinsight

The supernova remnant in Cygnus variously called the Veil Nebula, the Network Nebula, the Lacework Nebula, or the Cygnus Loop. Nearby is the bright and large star cluster NGC 6940 over the border in Vulpecula. It is obvious in binoculars but not often recorded in the same frame as the Veil. But the wide field of the little RedCat astrograph is ideal for framing such Milky Way starfields. This shows both the eastern and western halves of the Veil as well as the little bits in between such as prominent Pickering’s Triangle component.

This is a stack of 7 exposures, each 8-minutes at f/4.9 with the William Optics RedCat 51mm scope, and the Canon EOS Ra camera at ISO 3200 and with the Optolong L-Enhance dual narrow-band filter in place for all exposures. It picks up the Hydrogen-Alpha reds and Oxygen III greens very well, but with little of the cyan tint usually associated with OIII visible in this case. The field is 8° by 5°.

Encroaching dawn twilight prevented me taking a set of unfiltered images to blend in with these but they would not have been as essential for this field. Shot May 27/28, 2020 from home.

This is the supernova remnant in Cygnus known as the Veil Nebula, here in its entirety, from the eastern arc at left, catalogued as NGC 6992/5, to the western arc at right, NGC 6960, running past the star 52 Cygni. At top is the wedge-shaped "Pickering's Triangle," but discovered photographically by Wiliamina Fleming, one of the Harvard "computers." The field is filled with lots of little nebula bits and shrapnel-like fragments. All are remains of a star that exploded as a supernova some 10,000 to 20,000 years ago and is about 2,400 light years away.

The red is emission from ionized hydrogen, the cyan emission from ionized oxygen. This nebula shows a lot of oxygen emission at the leading edge of the expanding cloud of debris.

This is a blend of three stacks of exposures:

-- 10 x 8 minutes at ISO 3200 through an Optolong L-eXtreme very narrowband filter which lets through just green-blue oxygen III and red hydrogen alpha wavelengths

-- 8 x 8 minutes at ISO 1600 through an Optolong L-eNhance narrowband filter which lets through a broader bandwidth of light at those two main wavelenths, OIII and Ha

-- 8 x 6 minutes at ISO 800 through no filter which records the full spectrum of light

All were with the Canon EOS Ra through the SharpStar 94mm apo refractor at f/4.4 with its reducer/flattener and using an AstroHutech filter drawer between the flattener and camera to aid filter swapping. The L-eNhance set was taken June 11 until clouds intervened; the other 2 sets were taken the next night June 12. There was only about 2 hours of semi-darkness at this time of year from my latitude of 51° N. Guiding was with the MGEN3 stand-alone auto-guider (which applied a 5-pixel dither or image shift between each exposure) and William Optics 30mm guidescope. So impressive results less than 2 weeks from solstice at my latitude, made possible by the filters. With the dithering, no LENR or darks were applied, despite this being a warm-ish night.

The L-eXtreme set contributes the cyan component; the L-eNhance set contributes the red component best; the clear base layer contributes more normally coloured stars, as the filters tend to discolour the stars and add haloes.

All stacking, aligning, blending and masking were with Photoshop, with luminosity masks created with Lumenzia for selected adjustments to regions of different brightnesses. A high pass sharpen also added to the bright areas with another luminosity mask.

The Veil Nebula complex in Cygnus, aka the Cygnus Loop or Cirrus Nebula. This is a remnant of a supernova explosion that occured 5000 to 8000 years ago. It features a mix of red hydrogen-alpha and cyan oxygen III emission for a colourful complex of lacy filaments. The components have the catalogue numbers of NGC 6992-5 (eastern component at left) and NGC 6960 (western component at right, through the star 52 Cygni), and NGC 6974 for the middle area at top called Pickering's Triangle.

The region is on the boundary of a dark dust cloud obscuring stars to the right of the frame and yellowing the sky background there.

This is a blend of 10 x 6-minute exposures at ISO 3200 through an IDAS NBX dual narrowband filter to bring out the nebulosity, with a stack of 14 x 6-minute exposures at ISO 800 with no filter for the natural star colours and sky background, the latter set taken over two nights. All were with the filter-modified Canon R from AstroGear, on the Astronomics Astro-Tech 90CFT apo refractor with its reducer for f/4.8. All stacked, aligned and blended in Photoshop. Luminosity masks, a Nebula filter action with PhotoKemi Tools and a ProContrast filter with Nik Collection 6 ColorEFX helped enhance the nebulosity.

Taken from home in mid-May 2023 on the short nights and limited time between when this area reached high enough altitude to be worth shooting and the onset of dawn twilight.

The Cygnus Loop (a.k.a. Veil Nebula) in the constellation Cygnus, the remnants of a supernova explosion in which a star blew itself apart after exhausting its primary nuclear fuels.

A mosaic of 150 exposures, 300 sec. each in two overlapping fields in the light emitted by hydrogen, oxygen, and sulfur gas, rendered in red, blue, and green, respectively. Explore Scientific ED102 0.1m f/7 refractor, Stellarvue 0.8x reducer/flattener, ZWO ASI294MC camera, 7nm H-alpha, 7nm [O III], 6.5nm [S II] filters, iOptron CEM25P mount, ASIAir controller, autoguided. Processed in Astro Pixel Processor and Lightroom.

The Cygnus Loop Supernova Remnant (Optolong L-Enhance)

This latest capture from Grand Mesa Observatory’s system 4 (available on our subscriptions from October 1st) using a QHY367C full frame One Shot Color CMOS camera on a Takahashi E-180 F2.8 Astrograph with an Optolong L-Enhance dual-band pass Filter that we are testing for Optolong.

I wanted to compare the performance of the Optolong L-Enhance filter with the Williams Optics STC, the differences between the filters is the L-E is claimed to be capturing H-Alpha, H-Beta and OIII whereas the William Optics STC is claimed to be capturing H-Alpha and OIII

For the capture the seeing conditions were 4 out of 5 under bortle 2 skies, the WO STC was captured on a moonless night but the Optolong capture was captured with a 60% illumination (over half full)

For the comparison I acquired the exact same number and length of exposures, both were pre processed in Pixinsight using dark, bias and flat frames for each filter, no further work was carried out in pixinsight and following the stacking I saved each file as a 16 bit TIF file. I re processed the first capture using the WO STC filter and Post processed in Photoshop side by side with the Optolong filter. First doing linear stretching and balancing in levels followed by identical nonlinear stretching in curves then shadows and highlights, match color. Following this on each image I used Starnet star removal and replaced the stars for this final result.

In conclusion on this particular target I’m seeing that both filters are producing some incredible signal with the QHY367C One Shot Color CMOS camera that are comparable with images captured using monochrome cameras. It is my opinion that the William Optics filter has far more signal in OIII than the Optolong L-E but the stronger H-Alpha and H-Beta signal is obvious with the Optolong L-E.

When the moon wanes I’ll be capturing the Veil once again in Broadband for a further comparison (with only the UV/IR cut filter necessary on my sample of the QHY367C to prevent star bloating).

For comparison in high resolution:

WO STC Version www.flickr.com/photos/terryhancock/48683636067/in/album-7...

Total Acquisition Time 4.08 hours

Image capture details

By Terry Hancock

Location: GrandMesaObservatory.com Purdy Mesa, Colorado

Dates: 7th September 2019

Color 245 min, 49 x 300 sec

Camera: QHY367C

Offset 76, Gain 2850 Calibrated with flat, Dark & Bias

Optics: Takahashi E-180 F2.8 Astrograph

Filter: Optolong L-Enhance Duo-Narrowband

Mount: Paramount GT1100S

Image Acquisition software Maxim DL6.0

Pre Processed using Pixinsight

Post Processed using Photoshop CC

Some of my previous images of The Cygnus Loop

www.flickr.com/photos/terryhancock/albums/72157656480303673

About The Cygnus Loop

Containing many components such as The Eastern & Western Veil Nebulae NGC6960, NGC6992, NGC6995, IC1340, Pickerings Triangle, NGC6974 and NGC6979. Cygnus Loop is a supernova remnant, the expanding cloud of diverse elements created in the most powerful of explosions; a supernova.

As a Massive star nears the end of its life, it runs out of hydrogen fuel and begins fusing helium. After exhausting its supply of helium it begins to fuse heavier elements until finally, the star's core can no longer exert enough outward pressure and it collapses. A shock wave rebounds through the star so fierce that the star is shredded and leaves behind a small but extremely dense body; either a neutron star or a black hole.

The progenitor of this supernova remnant exploded more than 5,000 years ago and over the course of the past 5 millennia, the material has been racing away in all directions. The Cygnus loop now occupies a vast region of sky, equal to 36 full moons!

A Supernova seeds the interstellar medium with all types of heavy elements. In fact, every single atom of elements heavier than iron was created in this type of event, including many in your own body.

A cropped Bi-Color processing test of Pickering's Triangle (or Pickering's Triangular Wisp) in the Veil Nebula (a Supernova Remnant).

NGC 6974 and NGC 6979 are luminous knots in a fainter patch of nebulosity on the northern rim between NGC 6992 and Pickering's Triangle.

Ha & OIII Bi-Color:

Photographed in the Hydrogen-Alpha and Oxygen III spectral wavelengths of light (Ha mapped to Red, OIII mapped to Blue, SynthGreen).

Narrowband filters:

H-Alpha

OIII

Processing:

Pre-Processing and Linear workflow in PixInsight, and finished in Photoshop (experimenting with Wavelets, Photoshop Actions and new bi-color processing techniques).

Astrometry Info:

nova.astrometry.net/user_images/1381741#annotated

RA, Dec center: 312.019287471, 31.6310735368 degrees

Orientation: 0.443881002562 deg E of N

Pixel scale: 2.4980010893 arcsec/pixel

Martin

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Elaborazione difficile!

Non immaginavo che con oltre 13h di integrazione elaborare il complesso della nebulosa Velo (trattasi del resto di una supernova esplosa alcuni millenni fa) nella costellazione del Cigno fosse cosi ostico e complicato.

Forse alcuni fattori hanno complicato le cose: acquisizione con la presenza della luna quasi piena, trasparenza del cielo spesso non buona, inquinamento Bortle 6-7.

Probabilmente anche la debole luminosità della nebulosa insieme all'uso di un filtro a Banda-Stretta e ai fattori anzidetti hanno reso insufficienti i 300s di posa.

Ad ogni modo ho cercato di fare del mio meglio, anche se sono ancora principiante con i recenti programmi di elaborazione estetica GraXpert e SIRIL. Molto difficile è stato riuscire ad evidenziare le tenui nebulosità Halfa esterne alle nebulose NGC6960 e NGC6992.

Questa elaborazione ha evedenziato 2-3 criticità ottiche del teleobiettivo Zenit Giove 11-A soprattutto quando si utilizzano più filtri ottici contemporaneamente. Spero di trovare un buon compromesso quando utilizzerò questo obiettivo in futuro.

_____________

Difficult processing!

I didn't think that with over 13 hours of integration, processing the complex of the Veil nebula (the remnant of a supernova that exploded a few millennia ago) in the constellation of Cygnus would be so difficult and complicated.

Perhaps some factors complicated things: acquisition with the presence of an almost full moon, often poor transparency of the sky, Bortle 6-7 pollution.

Probably also the weak brightness of the nebula together with the use of a narrow-band filter and the aforementioned factors made the 300s exposure insufficient.

However, I tried to do my best, even though I am still a beginner with the recent aesthetic processing programs GraXpert and SIRIL. It was very difficult to highlight the faint Halfa nebulosities outside the NGC6960 and NGC6992 nebulae.

This processing also highlighted 2-3 optical critical issues of the Zenit Giove 11-A telephoto lens, especially when using multiple optical filters at the same time. I hope to find a good compromise when I use this lens in the future.

_____________

Lens : ZENIT Jupiter-11A 135mm f/4 flic.kr/p/MekcC7

Camera: ZWO ASI533MC-Pro

Filter: Optolong L-eNhance + SVbony UV-IR cut

Mount: Sky Watcher HEQ5 Synscan

Seeing: 3-4 (scala Antoniadi inversa)

104X300s / 121 gain / 18 dark/ 22 flat/ 22 darkflat/ 100bias

57x300s / 300gain / 12 dark / 22 flat / 22 darkflat/ 40bias

Date: 17-19-24-29-30-31/07/2024

Integration: 13h 25min

Temperature sensor: -5°C

Location: Biancavilla (CT) -Sicily- Italy 520m slm

acquisition: NINA

Processing: DSS +GraXpert+SIRIL+ PSCC.

astrometric resolution: nova.astrometry.net/annotated_full/11199844

J'ai ici encore opté pour la technique visant à faire ressortir le signal de l'Hydrogène excité: la session a été divisée en trois sous session, l'une en RGB, la suivante en bleu (à l'aide d'un filtre B+W 52E) et la dernière avec un filtre Kenko R1 sur l'objectif, afin d'obtenir, en combinaison avec le filtre interférentiel LPS-V4-N5, un filtrage en bande moyenne d'environ 19nm (www.sciencecenter.net/hutech/idas/lpsv4.htm)

Les deux sous sessions ont été assemblées indépendamment dans IRIS et les 2 fichiers résultants ensuite combinés, puis passés dans Photoshop CS4.

15 Darks, 20 Offsets (Darks et Offsets ont été utilisés pour les 2 sous sessions); 21 (RGB), 22 (B) et 15 (R) Flats . Assemblage dans IRIS et cosmétique dans Photoshop CS4. Nikon D5300 modifié astro par Eos for Astro, Nikkor 200-400mm F/4, filtre IDAS LPS-V4-N5, filtre Kenko R1 et B+W 52E, télécommande Twin1 ISR2 + Monture Astrotrac 320x.

Paramètres: 90s F/4 ISO 3200, 250mm.

Série prise le samedi 22 avril 2018

The Cygnus Loop (a.k.a. Veil Nebula) in the constellation Cygnus, the remnants of a supernova explosion in which a star blew itself apart after exhausting its primary nuclear fuels.

A mosaic of 72 exposures, 300 sec. each in six overlapping fields in the light emitted by hydrogen gas. Explore Scientific ED102 0.1m f/7 refractor, Stellarvue 0.8x reducer/flattener, ZWO ASI294MC camera, 7nm H-alpha filter, iOptron CEM25P mount, ASIAir controller, autoguided. Processed in Astro Pixel Processor and Lightroom.

Once upon a time there were one or two massive stars in the direction of constellation Cygnus. They exploded badly and shined extremely strongly for a short while 10 or 20 thousand years ago. The stars left this gas and dust behind. The irregular and random distribution of gas and dust are expanding at more than 100km/second at 2,400 light-years away from us. The high velocity makes the faint reddish arch surrounding the area like bow shock at the apex of ship. All in all, this is a supernova remnant. Thus they say.

Here is another sample of infrared bow shock in Camelopardalis:

www.flickr.com/photos/hiroc/53361264020

Equipment: Takahashi FSQ-130ED, F3 Reducer 0.6x, IDAS NB12 Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 6 times x 240 secconds, and 6 x 60 seconds at ISO 6,400 and f/3.0, focal length 390mm

There encroached clouds, and exposure session got short. This is a version made only with shorter exposure frames. Total exposure length was as short as half an hour. I felt this rather natural, clearer, and beautiful.

site: 1,118m above sea level at lat. 38 56 39 North and long. 140 48 17 East in Iwakagami-daira on the southern slope of Mt. Kurikoma in Kurihara Miyagi 宮城県栗原市 栗駒山 いわかがみ平

Ambient temperature was around 13 degrees Celsius or 55 degrees Fahrenheit. Wind was mild.

Captured from my amateur backyard Observatory in Western Michigan using the QHY11 Mono CCD and Takahashi E-180 Astrograph over several nights, September 2015, this is a 2 panel Hubble Style Narrowband Mosaic of The Cygnus Loop with SII mapped to Red, H-Alpha mapped to Green and OIII mapped to Blue. For the first time ever I captured this using 15 minute exposures rather than 10 minute exposures in an effort to capture the very faint nebulosity.

Image details

2 panel mosaic

Total Integration time 15 Hours

Location: DownUnderObservatory, Fremont, MI

H-Alpha 300 min, 20 x 15 min bin 1x1

OIII 300 min, 20 x 15 min bin 1x1

SII 300 min, 20 x 15 min bin 1x1

QHY11 monochrome CCD cooled to -20C

Takahashi E-180 F2.8 Astrograph

Paramount GT-1100S German Equatorial Mount

Image Acquisition Maxim DL

Stacking and Calibrating: CCDStack

Post Processing Photoshop CS5

This image is one of many included in a new e-book I'm about to publish with Brian Ventrudo of CosmicPursuits.com. This first book is about nebulae, and there will be others in the series. Here's a link where you can learn more about it cosmicpursuits.com/e-books/armchair-astronomer-volume-1-n...

Containing many components such as The Eastern & Western Veil Nebulae NGC6960, NGC6992, NGC6995, IC1340, Pickerings Triangle, NGC6974 and NGC6979. Cygnus Loop is a supernova remnant, the expanding cloud of diverse elements created in the most powerful of explosions; a supernova.

As a Massive star nears the end of its life, it runs out of hydrogen fuel and begins fusing helium. After exhausting its supply of helium it begins to fuse heavier elements until finally, the star's core can no longer exert enough outward pressure and it collapses. A shock wave rebounds through the star so fierce that the star is shredded and leaves behind a small but extremely dense body; either a neutron star or a black hole.

The progenitor of this supernova remnant exploded more than 5,000 years ago and over the course of the past 5 millennia, the material has been racing away in all directions. The Cygnus loop now occupies a vast region of sky, equal to 36 full moons!

A Supernova seeds the interstellar medium with all types of heavy elements. In fact, every single atom of elements heavier than iron was created in this type of event, including many in your own body.

A widefield HaRGB mosaic of the Veil Nebula Complex (Supernova Remnant).

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint supernova remnant. The source supernova exploded circa 3,000 BC to 6,000 BC, and the remnants have since expanded to cover an area roughly 3 degrees in diameter (about 6 times the diameter, or 36 times the area, of the full moon).

The Veil Nebula Complex has three main visual components:

The Western Veil (also known as Caldwell 34), consisting of NGC 6960 (the "Witch's Broom", "Finger of God", or "Filamentary Nebula") near the foreground star 52 Cygni;

The Eastern Veil (also known as Caldwell 33), whose brightest area is NGC 6992, trailing off farther south into NGC 6995 (together with NGC 6992 also known as "Network Nebula") and IC 1340; and

Pickering's Triangle (or Pickering's Triangular Wisp), brightest at the north central edge of the loop, but visible in photographs continuing toward the central area of the loop.

NGC 6974 and NGC 6979 are luminous knots in a fainter patch of nebulosity on the northern rim between NGC 6992 and Pickering's Triangle.

Imaging:

Photographed in Adobe RGB and the Narrowband Hydrogen-Alpha (Hα) spectral line of 656.28nm.

Image Acquisition:

Sequence Generator Pro with the "Mosaic and Framing Wizard".

Plate Solving:

Astrometry.net ANSVR Blind Solver via SGP.

Processing:

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop

Astrometry Info:

RA, Dec center: 312.872737183, 31.1089230819 degrees

Orientation: 2.03140875657 deg E of N

Pixel scale: 9.65149745813 arcsec/pixel

Annotated Sky Chart for this image.

View this image in the interactive virtual World Wide Telescope.

Martin

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[Home Page] [Photography Showcase] [My Free Photo App]

[Flickr Profile] [Facebook] [Twitter] [My Science & Physics Page]

Once upon a time there were one or two massive stars in the direction of constellation Cygnus. They exploded badly and shined extremely strongly for a short while 10 or 20 thousand years ago. The stars left this gas and dust behind. The irregular and random distribution of gas and dust are expanding at more than 100km/second at 2,400 light-years away from us. The high velocity makes the faint reddish arch surrounding the area like bow shock at the apex of ship. All in all, this is a supernova remnant. Thus they say.

Here is another sample of infrared bow shock in Camelopardalis:

www.flickr.com/photos/hiroc/53361264020

Equipment: Takahashi FSQ-130ED, F3 Reducer 0.6x, IDAS NB12 Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 4 times x 900 seconds, 6 x 240 sec, and 6 x 60 seconds at ISO 6,400 and f/3.0, focal length 390mm

There encroached clouds, and exposure session got short.

site: 1,118m above sea level at lat. 38 56 39 North and long. 140 48 17 East in Iwakagami-daira on the southern slope of Mt. Kurikoma in Kurihara Miyagi 宮城県栗原市 栗駒山 いわかがみ平

Ambient temperature was around 13 degrees Celsius or 55 degrees Fahrenheit. Wind was mild.

A widefield HaRGB mosaic of the Veil Nebula Complex (Supernova Remnant).

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint supernova remnant. The source supernova exploded circa 3,000 BC to 6,000 BC, and the remnants have since expanded to cover an area roughly 3 degrees in diameter (about 6 times the diameter, or 36 times the area, of the full moon).

The Veil Nebula Complex has three main visual components:

The Western Veil (also known as Caldwell 34), consisting of NGC 6960 (the "Witch's Broom", "Finger of God", or "Filamentary Nebula") near the foreground star 52 Cygni;

The Eastern Veil (also known as Caldwell 33), whose brightest area is NGC 6992, trailing off farther south into NGC 6995 (together with NGC 6992 also known as "Network Nebula") and IC 1340; and

Pickering's Triangle (or Pickering's Triangular Wisp), brightest at the north central edge of the loop, but visible in photographs continuing toward the central area of the loop.

NGC 6974 and NGC 6979 are luminous knots in a fainter patch of nebulosity on the northern rim between NGC 6992 and Pickering's Triangle.

About Star Colors:

You will notice that star colors differ from red, orange and yellow, to blue. This is an indication of the temperature of the star's Nuclear Fusion process. This is determined by the size and mass of the star, and the stage of its life cycle. In short, the blue stars are hotter, and the red ones are cooler.

Imaging:

Photographed in Adobe RGB and the Narrowband Hydrogen-Alpha (Hα) spectral line of 656.28nm.

Image Acquisition:

Sequence Generator Pro with the "Mosaic and Framing Wizard".

Plate Solving:

Astrometry.net ANSVR Blind Solver via SGP.

Processing:

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.

Astrometry Info:

View an Annotated Sky Chart of thie image.

Center RA, Dec: 312.888, 31.164

Center RA, hms: 20h 51m 33.081s

Center Dec, dms: +31° 09' 51.606"

Size: 3.3 x 2.46 deg

Radius: 2.059 deg

Pixel scale: 6.61 arcsec/pixel

Orientation: Up is 178 degrees E of N

Martin

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[Home Page] [Photography Showcase] [My Free Photo App]

[Flickr Profile] [Facebook] [Twitter] [My Science & Physics Page]

Total Exposure time 5.5 hours

Image details

Location: DownUnder Observatory, Fremont MI

Date of Shoot: June 21, June 30 2013

H-Alpha 150 min 5 x 30 min 7.5nm bin 1x1

RGB 180 min 4 x 15 min ea bin 1x1

Camera: QHY11 monochrome CCD www.astrofactors.com

QHY Color Filter Wheel

Optics: TMB92SS F5.5 APO Refractor with TS 2.5" Field Flattener

Paramount GT-1100S German Equatorial Mount (with MKS 4000)

Image Aquisition software Maxim DL5

Registed, Calibrated and Stacked in CCD Stack

Post Processed with Photoshop CS5

www.downunderobservatory.com

follow me on Facebook

twitter

Down Under Observatory

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<a

(Traitement HOO)

Camera Asi 071

Filtre dual-band

Apo RedCat 51 f4.9

Guidage chercheur SW et Asi 174

Monture EM-200 Temma-2Z

46x300 sec, 51 DOF (3h50)

Echelle de Bortle: 6-7

J'ai ici encore opté pour la technique visant à faire ressortir le signal de l'Hydrogène excité: la session a été divisée en deux sous session, l'une en RGB et l'autre en ayant ajouté un filtre Kenko R1 sur l'objectif, afin d'obtenir, en combinaison avec le filtre interférentiel LPS-V4-N5, un filtrage en bande moyenne d'environ 19nm (www.sciencecenter.net/hutech/idas/lpsv4.htm)

Les deux sous sessions ont été assemblées indépendamment dans IRIS et les 2 fichiers résultants ensuite combinés, puis passés dans Photoshop CS4. L'idée était à la base de refaire une sous session supplémentaire en bleu, mais le filtre bleu n'entrait pas dans la tirette à filtre du 200-400...

13 Darks, 19 Offsets (Darks et Offsets ont été utilisés pour les 2 sous sessions); 21 (RGB) et 15 (R) Flats . Assemblage dans IRIS et cosmétique dans Photoshop CS4. Nikon D5300 modifié astro par Eos for Astro, Nikkor 200-400mm F/4, filtre IDAS LPS-V4-N5, filtre Kenko R1, télécommande Twin1 ISR2 + Monture Astrotrac 320x.

Paramètres: 90s F/4 ISO 3200, 250mm.

Série prise le samedi 21 avril 2018

This is a new process of data from 2013, captured using RGB and H-Alpha filters, you can see my earlier image here

www.flickr.com/photos/terryhancock/9210242042/in/datepost...

Total Integration Time 5.5 hours

Image details

Location: DownUnder Observatory, Fremont MI

Date of Shoot: June 21, June 30 2013

H-Alpha 150 min 5 x 30 min H-Alpha 7.5nm bin 1x1

RGB 180 min 4 x 15 min ea RGB, bin 1x1

Camera: QHY11 monochrome CCD

QHY Color Filter Wheel

Optics: TMB92SS F5.5 APO Refractor with TS 2.5" Field Flattener

Paramount GT-1100S German Equatorial Mount

Image Aquisition software Maxim DL5

Registed, Calibrated and Stacked in CCD Stack

Post Processed with Photoshop CS5

Containing many components such as The Eastern & Western Veil Nebulae NGC6960, NGC6992, NGC6995, IC1340, Pickerings Triangle, NGC6974 and NGC6979. Cygnus Loop is a supernova remnant, the expanding cloud of diverse elements created in the most powerful of explosions; a supernova.

As a Massive star nears the end of its life, it runs out of hydrogen fuel and begins fusing helium. After exhausting its supply of helium it begins to fuse heavier elements until finally, the star's core can no longer exert enough outward pressure and it collapses. A shock wave rebounds through the star so fierce that the star is shredded and leaves behind a small but extremely dense body; either a neutron star or a black hole.

The progenitor of this supernova remnant exploded more than 5,000 years ago and over the course of the past 5 millennia, the material has been racing away in all directions. The Cygnus loop now occupies a vast region of sky, equal to 36 full moons!

A Supernova seeds the interstellar medium with all types of heavy elements. In fact, every single atom of elements heavier than iron was created in this type of event, including many in your own body.

Les Dentelles du Cygne (Veil Nebula).

Deuxième essai de traitement Iris et PS CS4

3 Darks, 9 Offsets ; 19 Flats. Assemblage dans IRIS et cosmétique dans Photoshop CS4. Nikon D5300 modifié astro par Eos for Astro, Nikkor 70-200mm F/2.8, télécommande Twin1 ISR2 + Monture Astrotrac 320x+ filtre IDAS LPS-D1-N

Paramètres: 120s F/3.2 ISO 2000, 200mm.

Série prise le 18.6.2017

Autre traitement: www.flickr.com/photos/achrntatrps/35349471174/in/photostr...

Cygnus Loop, 4 panels mosaic

NGC6992, NGC6995, IC1340, NGC6960, NGC6967, NGC6974

Ha, 600s, gain 0, -10°C, Antlia 3.5nm Ha filter

Panel 1: 52 frames

Panel 2: 50 frames

Panel 3: 27 frames

Panel 4: 48 frames

William Optics z61

ZWO ASI183MM Pro

iOptron CEM60

William Optics 50mm guiding + ZWO ASI120M-S

ZWO EAF

ZWO EFW

NINA

Calibrated by bias, dark and flat

Processed in PixInsight, TopazLabs DeNoise AI and Photoshop

Les Dentelles du Cygne (Veil Nebula): 30 images

7 Darks, 29 Offsets ; 22 Flats. Assemblage dans IRIS et cosmétique dans Photoshop CS4. Nikon D5300 modifié astro par Eos for Astro, Nikkor 70-200mm F/2.8, télécommande Twin1 ISR2 + Monture Skywatcher EQ6 R Pro+ filtre IDAS LPS-V4-N5

Paramètres: 301s F/3.5 ISO 800, 200mm.

Série prise le 12.9.2018 depuis mon balcon en périphérie de La Chaux-de-Fonds.

Les dentelles du Cygne sont un rémanent de supernova situé à environ 1470 années lumière, issu de l'explosion d'une étoile 20 fois plus massive que le Soleil, il y a environ 8000 ans... La couleur rouge est issue de l'hydrogène excité (sa bande alpha) alors que la couleur bleue provient de l'oxygène (sa bande O III), l'un des derniers éléments synthétisés par l'étoile avant sa spectaculaire explosion...

Source: en.wikipedia.org/wiki/Veil_Nebula

My first proper imaging attempt with my new QHY268M. I am loving having a 7 position filter wheel and being able to have all my filters on a single carrousel. It has allowed me to experiment more with my Baader narrowband filters, and the results have been really cool.

This was also my first attempt at the Veil Nebula region, and I tried to get as much of the Cygnus Loop as I could fit in at f/3.6 with the FSQ. The image is a bi-color composition using images taken with a hydrogen-alpha filter and an O3 filter combined into an RGB image.

I used PixInsight's Pixel Math function to combine the Ha and O3 channels as follows:

Red channel: (0.6 * ha) + (0.4 * o3)

Green channel: o3

Blue channel: o3

- Taken from a Bortle 5 suburban backyard.

- Takahashi FSQ-106EDX4 at f/3.6 with the Reducer CR 0.73x.

- QHY268M, Photographic DSO Mode-2CMS, gain 56, offset 25, 1x1 binning.

- QHYCFW5 7 position 36mm filter wheel.

- Baader 36mm mounted 7nm Hydrogen-Alpha, and 8.5nm O3 filters

- Losmady G11 Gemini 2, guided with a piggybacked AstroTech 65EDQ and an Orion StarShoot autoguider.

- Software included PHD2 for guiding, Sequence Generator Pro for acquisition, and PixInsight for image processing.

120 x 300s integrations Baader 7nm Hydrogen-Alpha

120 x 300s integrations Baader 8.5nm O3

20 hours total exposure time

Image details

Location: DownUnder Observatory, Fremont MI

Date of Shoot: June 21, June 30 2013

H-Alpha 150 min 5 x 30 min H-Alpha 7.5nm bin 1x1

RGB 180 min 4 x 15 min ea RGB, bin 1x1

Camera: QHY11 monochrome CCD www.astrofactors.com

QHY Color Filter Wheel

Optics: TMB92SS F5.5 APO Refractor with TS 2.5" Field Flattener

Paramount GT-1100S German Equatorial Mount (with MKS 4000)

Image Aquisition software Maxim DL5

Registed, Calibrated and Stacked in CCD Stack

Post Processed with Photoshop CS5

Total Exposure time 5.5 hours

www.downunderobservatory.com

follow me on Facebook

twitter

Down Under Observatory

YouTube

view my stuff on Google+

The Cygnus Loop is a supernova remnant; the expanding cloud of diverse elements created in the most powerful of explosions; a supernova.

As a Massive star nears the end of its life, it runs out of hydrogen fuel and begins fusing helium. After exhausting its supply of helium it begins to fuse heavier elements until finally, the star's core can no longer exert enough outward pressure and it collapses. A shockwave rebounds through the star so fierce that the star is shredded and leaves behind a small but extremely dense body; either a neutron star or a black hole.

The progenitor of this supernova remnant exploded more than 5,000 years ago and over the course of the past 5 millennia, the material has been racing away in all directions. The Cygnus loop now occupies a vast region of sky, equal to 36 full moons!

A Supernova seeds the interstellar medium with all types of heavy elements. In fact, every single atom of elements heavier than iron was created in this type of event, including many in your own body.

Captured from my amateur backyard Observatory in Western Michigan using the QHY11 Mono CCD and Takahashi E-180 Astrograph over several nights, September 2015, this is a Hubble Style image with SII mapped to Red, H-Alpha mapped to Green and OIII mapped to Blue. For the first time ever I captured this using 15 minute exposures rather than 10 minute exposures in an effort to capture the very faint nebulosity.

Image details

Total Integration time 7.5 Hours

Location: DownUnderObservatory, Fremont, MI

H-Alpha 150 min, 10 x 15 min bin 1x1

OIII 150 min, 10 x 15 min bin 1x1

SII 150 min, 10 x 15 min bin 1x1

QHY11 monochrome CCD cooled to -20C

Takahashi E-180 F2.8 Astrograph

Paramount GT-1100S German Equatorial Mount

Image Acquisition Maxim DL

Stacking and Calibrating: CCDStack

Post Processing Photoshop CS5

Containing many components such as The Eastern & Western Veil Nebulae NGC6960, NGC6992, NGC6995, IC1340, Pickerings Triangle, NGC6974 and NGC6979. Cygnus Loop is a supernova remnant, the expanding cloud of diverse elements created in the most powerful of explosions; a supernova.

As a Massive star nears the end of its life, it runs out of hydrogen fuel and begins fusing helium. After exhausting its supply of helium it begins to fuse heavier elements until finally, the star's core can no longer exert enough outward pressure and it collapses. A shock wave rebounds through the star so fierce that the star is shredded and leaves behind a small but extremely dense body; either a neutron star or a black hole.

The progenitor of this supernova remnant exploded more than 5,000 years ago and over the course of the past 5 millennia, the material has been racing away in all directions. The Cygnus loop now occupies a vast region of sky, equal to 36 full moons!

A Supernova seeds the interstellar medium with all types of heavy elements. In fact, every single atom of elements heavier than iron was created in this type of event, including many in your own body.

Les Dentelles du Cygne (Veil Nebula).

Quatrième essai, cette fois sur une partie seulement du rémanent de supernova. Traitement Iris et PS CS4

18 images 4 Darks, 8 Offsets ; 11 Flats. Assemblage dans IRIS et cosmétique dans Photoshop CS4. Nikon D5300 modifié astro par Eos for Astro, Nikkor 200-400mm F/4, télécommande Twin1 ISR2 + Monture Astrotrac 320x+ filtre IDAS LPS-D1-N

Paramètres: 120s F/4.5 ISO 2000, 400mm (équivalent 600mm en 24x36).

Série prise le 26.8.2017

Once upon a time there were one or two massive stars in the direction of constellation Cygnus. They exploded badly and shined extremely strongly for a short while 10 or 20 thousand years ago. The stars left this gas and dust behind. The irregular and random distribution of gas and dust are expanding at more than 100km/second at 2,400 light-years away from us. The high velocity makes the faint reddish arch surrounding the area like bow shock at the apex of ship. All in all, this is a supernova remnant. Thus they say.

Here is another sample of infrared bow shock in Camelopardalis:

www.flickr.com/photos/hiroc/53361264020

Equipment: Takahashi FSQ-130ED, F3 Reducer 0.6x, IDAS NB12 Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 4 times x 900 seconds, 6 x 240 sec, and 6 x 60 seconds at ISO 6,400 and f/3.0, focal length 390mm

There encroached clouds, and exposure session got short.

site: 1,118m above sea level at lat. 38 56 39 North and long. 140 48 17 East in Iwakagami-daira on the southern slope of Mt. Kurikoma in Kurihara Miyagi 宮城県栗原市 栗駒山 いわかがみ平

Ambient temperature was around 13 degrees Celsius or 55 degrees Fahrenheit. Wind was mild.

Once upon a time there were one or two massive stars in the direction of constellation Cygnus. They exploded badly and shined extremely strongly for a short while 10 or 20 thousand years ago. The stars left this gas and dust behind. The irregular and random distribution of gas and dust are expanding at more than 100km/second at 2,400 light-years away from us. The high velocity makes the faint reddish arch surrounding the area like bow shock at the apex of ship. All in all, this is a supernova remnant. Thus they say.

Here is another sample of infrared bow shock in Camelopardalis:

www.flickr.com/photos/hiroc/53361264020

Equipment: Takahashi FSQ-130ED, F3 Reducer 0.6x, IDAS NB12 Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 4 times x 900 seconds, 6 x 240 sec, and 6 x 60 seconds at ISO 6,400 and f/3.0, focal length 390mm

There encroached clouds, and exposure session got short.

site: 1,118m above sea level at lat. 38 56 39 North and long. 140 48 17 East in Iwakagami-daira on the southern slope of Mt. Kurikoma in Kurihara Miyagi 宮城県栗原市 栗駒山 いわかがみ平

Ambient temperature was around 13 degrees Celsius or 55 degrees Fahrenheit. Wind was mild.

Once upon a time there were one or two massive stars in the direction of constellation Cygnus. They exploded badly and shined extremely strongly for a short while 10 or 20 thousand years ago. The stars left this gas and dust behind. The irregular and random distribution of gas and dust are expanding at more than 100km/second at 2,400 light-years away from us. The high velocity makes the faint reddish arch surrounding the area like bow shock at the apex of ship. All in all, this is a supernova remnant. Thus they say.

Here is another sample of infrared bow shock in Camelopardalis:

www.flickr.com/photos/hiroc/53361264020

Equipment: Takahashi FSQ-130ED, F3 Reducer 0.6x, IDAS NB12 Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 4 times x 900 seconds, 6 x 240 sec, and 6 x 60 seconds at ISO 6,400 and f/3.0, focal length 390mm

There encroached clouds, and exposure session got short.

site: 1,118m above sea level at lat. 38 56 39 North and long. 140 48 17 East in Iwakagami-daira on the southern slope of Mt. Kurikoma in Kurihara Miyagi 宮城県栗原市 栗駒山 いわかがみ平

Ambient temperature was around 13 degrees Celsius or 55 degrees Fahrenheit. Wind was mild.

The Veil Nebula complex is the glowing remnants of a supernova that occurred thousands of years ago. Also called the Cirrus Nebula because of its resemblance to the wispy clouds, it is composed of several distinct regions. The right hand portion is sometimes known as the Witch's Broom. Near the top-center is a rich region called Pickering's Triangle. The brightest portion near the left edge is truly what gives the overall nebula the "Veil" moniker.

Les Dentelles du Cygne (Veil Nebula)

3 Darks, 9 Offsets ; 19 Flats. Assemblage dans IRIS et cosmétique dans Photoshop CS4. Nikon D5300 modifié astro par Eos for Astro, Nikkor 70-200mm F/2.8, télécommande Twin1 ISR2 + Monture Astrotrac 320x+ filtre IDAS LPS-D1-N

Paramètres: 120s F/3.2 ISO 2000, 200mm.

Série prise le 18.6.2017

Autre traitement: www.flickr.com/photos/achrntatrps/36145429536/in/photostr...

Gear used:

Camera: ZWO ASI 533 MC Pro (Color)

Lens: Sigma 150mm

Mount: Skywatcher HEQ-5

Guiding: ZWO ASI 120mm Mini

Processing: Pixinsight & Photoshop

Total Exposure Time: 7 hours

Exposure Time per frame: 5 minutes

Unity gain

Bortle 9 sky

Once upon a time there were one or two massive stars in the direction of constellation Cygnus. They exploded badly and shined extremely strongly for a short while 10 or 20 thousand years ago. The stars left this gas and dust behind. The irregular and random distribution of gas and dust are expanding at more than 100km/second at 2,400 light-years away from us. The high velocity makes the faint reddish arch surrounding the area like bow shock at the apex of ship. All in all, this is a supernova remnant. Thus they say.

Here is another sample of infrared bow shock in Camelopardalis:

www.flickr.com/photos/hiroc/53361264020

Equipment: Takahashi FSQ-130ED, F3 Reducer 0.6x, IDAS NB12 Dual Narrowband Filter, and EOS R-SP4II, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 4 times x 900 seconds, 6 x 240 sec, and 6 x 60 seconds at ISO 6,400 and f/3.0, focal length 390mm

There encroached clouds, and exposure session got short.

site: 1,118m above sea level at lat. 38 56 39 North and long. 140 48 17 East in Iwakagami-daira on the southern slope of Mt. Kurikoma in Kurihara Miyagi 宮城県栗原市 栗駒山 いわかがみ平

Ambient temperature was around 13 degrees Celsius or 55 degrees Fahrenheit. Wind was mild.

Campo astronomico organizzato dal G.A.C. (Gruppo Astrofili Catanesi) 22-25/08/2014 presso il Rifugio Margio Salice -monti Nebrodi- Maletto (CT) Sicily-Italy 1250m slm.

I miei due precedenti tentativi di acquisire la Veil Nebula (nebulosa Velo) sono andati male a causa di un leggerissimo fuori fuoco provocato dallo spostamento dell'obiettivo in posizione verticale.

Scoperta la causa, in questa occasione sono stato molto attento alla messa a fuoco.

L'integrazione totale non è quella che avrei voluto io ma dalle 00:30 alle 03:30 di quella notte il cielo si è coperto di nuvole.

Unico vero problema elaborativo di questa immagine sono state le stelle: un fitto e pressochè uniforme strato di stelle vicinissime il cui diametro è stato difficilissimo da "domare".

Purtroppo la temperatura sensibilmente alta del sensore (t°=27°) e l'integrazione che conseguentemente doveva essere maggiore non mi hanno permesso di osare oltre nell'elaborazione.

Comunque, pensando anche ai tentativi falliti, mi ritengo soddisfatto del risultato ottenuto e del FOV che ritrae la Veil nebula insieme all'ammasso aperto NGC6940.

per la versione con risoluzione astrometrica

astrob.in/120316/0/

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Lens: Zenit Giove-11A 135mm f/4 (ЗЕНИТ ЮПИТЕР-11A)

Camera Canon EOS 550D (Rebel T2i) mod. Baader BCF

Mount: Sky Watcher HEQ5 Synscan

date 23/08/2014

21x300s 1600iso / 21 dark /21 flat / 21 bias

Integration 1h 45min

Seeing 2 (scala Antoniadi inversa)

temperature 21°C (media)

Temperature sensor: 27°C (media)

Location: Rifugio Margio Salice, monti Nebrodi (Sicily-Italy) 1250m slm

Elaborazione DSS + PSCS3

The Veil Nebula

NGC 6960, 6974, 6979, 6992, 6995

- - - Quick Stack and Edit - - -

Shooting Location :

* 51° N 3° E

* bortle class 6 backyard

Object Information

* Type : Supernova Remnant

* Location (J2000.0) : RA 20h 45m 00s / DEC +30° 42m 00"

* Approximate discance : 460 parsecs / 1500 lightyears

Hardware

*Mount : Celestron CGX

*Imaging Scope : Canon EF 70-200 f/2.8 L IS USM II @ 135mm

*Imaging Camera : ZWO ASI 183MM

*Guide Scope : Skywatcher StarTravel 80 (80mm f/5)

*Guide Camera : ZWO ASI 120MM

Exposures

* 15 Light frames

* 25 Dark frames

* 25 Flat frames

* Exposures : 120sec bin 2x2 @ unity gain

*Total Integration time : 0h30m

*Capture date : 2018-06-26

Capture Software

* Sequence Generator Pro

* PHD2 Guiding

Processing Software

* DSS - Deep Sky Stacker

* Adobe Photoshop