2 hours each of Ha and Oiii data

 

40 shots at 360 seconds each, plus calibration frames

 

Processed in Pixinsight, Lightroom, & Photoshop

Description:

Cygnus Loop is the remnant of a supernova event that occured between 5,000 and 20,000 years ago. This image records the Loop's Hydrogen-alpha and Oxygen-3 emissions. As seen from earth, or 1500 light years away, its apparent diameter is about three degrees (six full moons) while its actual diameter is 170 light years across. The major components that are often photographed separately are Eastern Veil (upper right arc), Western Veil (lower left arc), and Pickering's Triangle (left center). Within the loop there are several embedded New General Catalog Catalog (NGC) objects and at least one Index Catalog (IC) object.

 

This image is a single, un-mosiaced frame that was captured in a Bortle 6 suburban sky. Transparency as reported by Astrospheric was below average.

 

Equipment

ZWO ASI6200MM-P/EFW 2" x 7 (HO)

TeleVue NP101is/NPR-2073 (4" f/4.3)

Losmandy G11

 

Software:

Captured in NINA

Processed in PixInsight

 

Integration:

Ha: 16 x 600s = 2:40

OIII: 16 x 600s = 2:40

RGB: 20 x 30s each filter

Total: 5:50

Description:

Pickering's Triangle is an major and often photographed components of the Cygnus Loop complex, which is a remnant of a supernova event that occured between 5,000 and 20,000 years ago. This image records the Loop's Hydrogen-alpha and Oxygen-3 emissions. It lies about 1500 light years away from Earth in the direction of the constellation Cygnus.

 

This image is a single, un-mosiaced frame that was captured in a Bortle 6 suburban sky. Transparency as reported by Astrospheric was below average.

 

Equipment

ZWO ASI6200MM-P/EFW 2" x 7 (HO)

TeleVue NP101is/NPR-2073 (4" f/4.3)

Losmandy G11

 

Software:

Captured in NINA

Processed in PixInsight

 

Integration:

Ha: 16 x 600s = 2:40

OIII: 16 x 600s = 2:40

RGB: 20 x 30s each filter

Total: 5:50

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

This part of the Cirrus Nebula complex is called Pickerings Trangle (NGC 6979). Shot in a windy night with imaging time limited by clouds and rain.

 

TS Photoline 130/910 with TSRED379 reducer and ASI1600mmp.

 

34 x 200s Ha

20 x 200s OIII

Here is a supernova remnant known as the Veil Nebula. A section called Pickering's Triangle.

 

"It was discovered photographically in 1904 by Williamina Fleming (after the New General Catalogue was published), but credit went to Edward Charles Pickering, the director of her observatory, as was the custom of the day."

 

#veilnebula #pickeringstriangle #zwo #asi533mcpro #losmandy #patience #godsbeauty

#astrophotography #astrobackyard #losmandy #losmandygm8 #zwo #asi533mcpro #optolong

 

Technical Info:

Optics: SGO 6" f/4 Imaging Newtonian @ 610mm FL

Explore Scientific 2" HR Coma Corrector

Camera: ZWO ASI533MC Pro

Filter: 2" Optolong L-Enhance

Mount: Losmandy GM8

Guiding: QHY Mini Guide Scope + PHD2 Software

Acquisition: Sequence Generator Pro

Exposure: Light (Gain 200) - 35 subs @ 240 Seconds (2 hours 20 Minutes)

Calibration: 30 Darks, 50 Flats, 50 Dark Flats

​Processing: Deep Sky Stacker, Adobe Photoshop, Topaz Denoise AI, Astronomy Action Set plug in for PS, Astro Flat Pro plug in for PS

***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

When the weather is not playing along, it is fun to fiddle with old data and experiment with different processing techniques.

 

Here is a starless version of Pickering's Triangle (NGC 6979), also called Pickering's Triangular Wisp in the Veil Nebula (a filamentary Supernova Remnant).

 

The Veil nebula was born out of the death explosion of a massive star, and the expanding shockwave is situated 1,500 light-years away.

 

Hα & OIII Narrowband:

Baader H-alpha 7nm Narrowband Filter.

Baader OIII 8.5nm Narrowband Filter.

 

Processing:

Pre-Processing and Linear workflow in PixInsight, Starnet++ used for star removal and finished in Photoshop.

 

Original data captured in 2016, as a test with my APO Refracting Telescope and TeleVue Powermate (HOO Palette).

 

Astrometry info from the original image:

Center RA, Dec: 312.019, 31.631

Center RA, hms: 20h 48m 04.629s

Center Dec, dms: +31° 37' 51.865"

Size: 42.6 x 31.9 arcmin

Radius: 0.444 deg

Pixel scale: 2.5 arcsec/pixel

Orientation: Up is 267 degrees E of N

 

Flickr Explore:

2020-11-01

 

Photo usage and Copyright:

Medium-resolution photograph licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Terms (CC BY-NC-ND 4.0). For High-resolution Royalty Free (RF) Licenscing, Contact.

 

Martin

-

[Home Page] [Photography Showcase] [eBook] [Twitter]

[Facebook] [3D VFX & Mocap] [Science & Physics Page]

 

Pickering's Triangle is part of the Cygnus Loop supernova remnant, which includes the famous Veil Nebula. It is located about 1,500 light-years from Earth, in the constellation Cygnus. The Veil Nebula is a cloud of heated and ionized gas and dust. 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. At the time of explosion, the supernova would have appeared brighter than Venus in the sky, and visible in daytime. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). The analysis of the emissions from the nebula indicates the presence of oxygen, sulfur, and hydrogen. The Cygnus Loop is also a strong emitter of radio waves and x-rays.

This is a shockwave of hydrogen gas expelled in a supernova explosion several thousand years ago. There is probably a remnant stellar black hole or neutron star at the centre of the cloud.

 

Compression of the gas clouds by the blast wave causes the multiple layers seen. These then fluoresce as energy is pumped into them.

 

The cloud measures about 3 degrees across the night sky, 6x the diameter of the Moon but our eyes aren’t very sensitive to the deep red light emitted by excited hydrogen gas.

 

To the left in the image is a region known as the Western Veil, top centre is Pickering’s Triangle and to the mid right is the Eastern Veil or “Witches Broom”.

 

The dense knot towards bottom left is known as the “Southeastern knot”.

  

This is a robotic image taken at Grand Mesa Observatory system 1 scope, Colorado. It’s 21 x 10 minute exposures with a hydrogen alpha filter.

 

I’ve used the program Starnet++ to remove most of the background stars.

A two panel widefield Narrowband (HaOIII bi-color) Mosaic of a section 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 was a star 20 times more massive than the Sun, which exploded around 8,000 years ago. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 36 times the area of the full Moon). Data from FUSE (Far Ultraviolet Spectroscopic Explore) places the nebula at a distance of about 1,470 light-years away. This category of Deep-sky Object is also known as a Filamentary Nebula.

 

The Western Veil & Pickering's Triangle:

This image shows 2 of the regions in Veil Nebula Complex:

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;

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.

 

Technical Info:

24 x 300 sec. 7nm Hydrogen-Alpha (Ha) per panel.

24 x 300 sec. 6.5nm Doubly Ionized Oxygen (OIII) per panel.

William Optics WO Star 71 Refractor Telescope.

Exposures at -20°C on my QHY163M Camera.

Integration time 8 hours total (4 hours per panel).

Calibration frames: Bias, Darks and Flats.

 

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:

Center RA, Dec: 312.171, 30.742

Center RA, hms: 20h 48m 40.959s

Center Dec, dms: +30° 44' 30.452"

Size: 2.55 x 1.78 deg

Radius: 1.554 deg

Pixel scale: 5.74 arcsec/pixel

Orientation: Up is 124 degrees E of N

View an Annotated Sky Chart for this image.

View this image in the WorldWideTelescope.

 

Flickr Explore:

2018-10-15

 

Download mh_Astro_Tools Suite:

anti-matter-3d.com/tools

(or from GitHub)

GitHub Release Page

Also see:

Astro_Weather_Widget

 

Photo usage and Copyright:

Medium-resolution photograph licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Terms (CC BY-NC-ND 4.0). For High-resolution Royalty Free (RF) licensing, contact me via my site: Contact.

 

Martin

-

[Home Page] [Photography Showcase] [eBook] [Twitter]

[Facebook] [3D VFX & Mocap] [Science & Physics Page]

 

Discovered in 1784 by William Herschel, NGC 6979 is a supernova remnant in the constellation of Cygnus and is one part of the more well known Veil Nebula or Cygnus Loop. The source of the supernova was from a star 20 times the size of our sun exploding between 10 and 20 thousand years ago. The thin strands are made of heated and ionised gases. In this image the teal tones represent oxygen gas while the red tones represent sulphur and hydrogen gases. Recent measurements estimate the distance from Earth to be 2400 light-years.

  

4 imaging sessions 19 - 24 June 2022

92x 600 second exposures using a dual narrow band filter

Total time: 15hours 20mins

  

Imaged from my backyard in Gérgal, Almería, Spain

Bortle Class: 4 to 5

Telescope: William Optics GT81 @ 385mm

Image Camera: ZWO ASI 183 MC Pro -10C

Guiding: ZWO OAG with ZWO ASI 192MM S

Focusing: Pegasus FocusCube 2

Filter: Optolong L-Extreme

Mount: Celestron CGX

Computer: Intel Atom NUC

  

Capture software: NINA, PHD2, Sharpcap Pro

Processing software: PixInsight, StarXterminator, NoiseXterminator, Adobe Lightroom

 

This part of the Cirrus Nebula complex is called Pickerings Trangle (NGC 6979). Shot in a windy night with imaging time limited by clouds and rain.

 

TS Photoline 130/910 with TSRED379 reducer and ASI1600mmp.

 

34 x 200s Ha

20 x 200s OIII

Pickering's Triangle, Veil Nebula

 

HSO data from Telescope Live. Processed with PixInsight.

 

nova.astrometry.net/user_images/13041683#annotated

app.telescope.live/en

A new imaging project has been published on Cosgrove's Cosmos!

 

Pickering's Triangle is a smaller and fainter portion of the Cygnus Loop/Veil Nebula Supernova remnant. It is a triangular region of shimmering filaments and sheets that gracefully intertwine.

 

This image was taken on my Williams Optics 132mm f/7 FLT APO telescope platform, which uses a ZWO ASI1600MM-Pro camera and is supported by an IOptron CEM60 Mount.

 

Twelve hours of narrowband data were collected over four nights ending on September 2nd.

 

The image was processed by using a Synthetic computed Luminance image and extensive use of starless processing workflows.

 

The final image is rendered using the Hubble SHO palette.

 

The full story behind this image, along with a detailed processing walkthrough, can be found at:

cosgrovescosmos.com/projects/pickerings-triangle

 

Please consider signing up for my website update newsletters so that you won't miss any new releases.

 

A short video introduction to this imaging project can be seen at:

youtu.be/EGFFAG0Yjbg

 

Please consider supporting my fledgling YouTube Channel by Subscribing and ringing the bell! I appreciate your support while I figure this video stuff out!

 

Thanks, and Clear Skies!

Pat

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.

All part of the Veil Nebula in Cygnus - aka the Cygnus Loop - this is the Western Veil and Pickering's Triangle (the triangular looking bit). It's the remnants of a supernova in the distant past.

 

There's lots of it missing, but I doubt I'll be able to pick up much more with a DSLR and my skies. Had to throw every weapon in my processing armoury at it to get this much! Having said that, I may have another crack next year :)

 

This is 38 x 5 minute subs (just over three hours) with the usual kit.

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.

As part of my latest focus on the Veil I continued from the eastern Veil (See in my previous photos) to the middle part of the Veil named Pickering's Triangle. The Pickering's triangle is also part of the Cygnus Loop supernova remnant that include all of the Veil nebula. It is estimated at around 1500 LY from us.

 

Photo details:

Ha BIN1 - 130 x 15min = 32.5 Hours

Blue BIN2 - 47x3min = 2.35 Hours

Green BIN2 - 50x3min = 2.5 Hours

Red BIN2 - 48x3min = 2.4 Hours

 

Equipment used:

Mount - ASA DDM60

Telescope - Skywatcher P250

Camera - QSI583wsg

Filters - Astrodon Ha3nm, RGB serial2.

 

Thanks for watching,

Haim

Just spent a not inconsiderable amount of time over the last couple of weeks working on this. This is 14 x 1200 secs Ha and 7 x 1200 secs Olll, which isn't enough (hence the not inconsiderable amount if time!), but with the amount of clear sky we get here, it's difficult to do enough 1200 second subs. I could add to it, but I'd rather move on to the next one :)

 

ED80 with 0.85 reducer, HEQ5 pro

Cooled mono Canon 450D

Calibrated and stacked in Nebulosity

Processed with Straton and CS5

William Optics Star71, Atik 460ex mono, Astrodon Ha & OIII filters (3nm), AP Mach1.

 

Color mapping: Red: Ha Green: 70% OIII/30% Ha

Blue: OIII

The Veil Nebula

 

This is the remnants of a star that exploded between 5000 to 8000 years ago and this image is solely showing the glowing Hydrogen Gas.

 

The upper section is known as the Witches Broom and the lower section as Pickering's Triangle.

 

This is a 2 panel mosaic, each section consisting of 13x15 minute exposures.

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

-

[Home Page] [Photography Showcase] [eBook] [Twitter]

[Facebook] [3D VFX & Mocap] [Science & Physics Page]

 

Well, my single most ambitious astrophotography project to date is finally complete and I am VERY pleased with how it came out. It's my first time doing a mosaic as well as my first time shooting over multiple nights as well as my first time getting over 10 hours of exposure time on a single target. Whew. This is gonna be a long write up.

 

The Cygnus Loop is a supernova remnant - left behind long after a star exploded. It leaves behind a beautiful burst of colors and shapes, including the Eastern and Western Veil Nebulae and Pickering's Triangle.

 

This image is a 4-panel HOO bicolor mosaic totaling 41 hours of exposure between all 4 panels.

 

-------------------------------

 

Equipment:

- Scope: AstroTech AT65EDQ Quad APO

- Mount: Rowan Belt Modded Orion Sirius EQ-G

- Imaging Camera: ZWO ASI1600mm-Pro

- Guidescope: QHY MiniGuideScope

- Guide Cam: QHY5L-II Mono

 

Software:

- EQMOD/StellariumScope for mount control

- APT for image capture and platesolving

- PHD2 for guiding

- PixInsight for Processing

 

-------------------------------

 

Acquisition:

- Location: Sugar Land, TX

- Gain: 200; Offset: 50; Camera @ -10C

- 248 x 300" Ha - Chroma 5nm

- 244 x 300" OIII - Chroma 3nm

- Nights: 6/5/20, 6/6/20, 6/10/20, 6/11/20, 6/12/20, 6/13/20, 6/15/20, 6/16/20, 6/17/20

 

Total Integration Time: 41 Hours

 

-------------------------------

 

Pre-Processing of each Panel (Apply to each Ha and OIII master panel)

- Integration of all panels

- DynamicCrop to get rid of edges

- DBE on masters

 

-------------------------------

 

Initial Processing (done on each Ha and OIII Master Panel)

- Deconvolution via Oke's tutorial

- TGV+MMT via Jon Rista's Tutorial

 

-------------------------------

 

Mosaic Process for Each set of 4 masters per Filter

- Run each master through ImageSolver to assign coordinates w/ distortion model generated

- MosaicByCoordinates script to register masters for mosaic

- dnaLinearFit to match background values of registered images

- GradientMergeMosaic to make mosaic for each filter

 

--------------------------------

 

Processing of each Mosaic

- HistogramTransformation to Stretch

- HistogramTransformation to bring down background levels

- LocalHistogramEqualization to bring out nebula details w/ rangemask

 

--------------------------------

 

Combining the Ha and OIII Mosaics

- DynamicCrop to remove mosaic edges from each filter mosaic

- StarAlignment to align both mosaics

- Combine mosaics into color via PixelMath with the following combination:

 

- R: iif(ha>.15,ha,(ha*.8)+(oiii*.2))

- G: iif(ha>0.5,1-(1-oiii)*(1-(ha-0.5)),oiii*(ha+0.5))

- B: iif(oiii>.1,oiii,(ha*.3)+(oiii*.2))

 

--------------------------------

 

Further Processing

- DynamicCrop to remove edges

- invert -> SCNR -> invert to remove magenta tint

- ABE to remove background gradient

- CurvesTransformation on hue to change red hue

- CurvesTransformation on red to bring down red tone

- HistogramTransformation to reduce background further

- CurvesTransformation for contrast

- ColorSaturation w/ rangemask to deepen blues

- CurvesTransformation w/ RangeMask to darken background further

- StarNet++ for StarMask

- Binarize and Convolution on StarMask

- MorphologicalTransformation to reduce stars

- Export to Photoshop to manually take care of seams

- Save and Export

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

Cygnus Loop and its Veil nebulas, taken under a full moon, 10.nov 2022.

 

170x60 sec light frames, 25x60sec dark frames, f/5,6, iso: 3200, Nikon d810a, nikkor 300mm, Mount: Astrotrac tt320-ax, Unguided, STC Astro Duo-Narrowband Clip Filter.

 

Stacked in DSS, processed i PS and LR.

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.

 

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

-

[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

-

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

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

Exif:

 

170x60 sec light frames, 25x60sec dark frames, f/5,6, iso: 3200, Nikon d810a, nikkor 300mm, Mount: Astrotrac tt320-ax, Unguided, STC Astro Duo-Narrowband Clip Filter.

 

Stacked in DSS, processed i PS and LR.

Imaging camera: ATIK 11000

Imaging scope: ASA10N-OK3 10" f/3.6 Newtonian Astrograph with ASA Wynne 3" Corrector

Mount: Takahashi EM400

Guiding scope: Orion 80ED refractor

Guiding camera: Starshoot autoguider

Guiding software: PHP Guiding

 

Filters: Astrodon SHO (3 nm)

22 x 300 s Ha (binning 1x1, -10°c)

26 x 300 s OIII (binning 1x1, -20°c)

20 x 600 s SII (binning 1x1, -20°c)

 

Total integration time: 7 hours

 

100 bias, 100 darks, 15 flats

 

Date: 24/07/2014, 26/09/2014 and 27/09/2014.

Location: Société Lorraine d'Astronomie (SLA), Vandoeuvre-lès-Nancy (Meurthe-et-Moselle - FRANCE)

 

Processing with PixInsight 1.8

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

 

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus hence its alternate name The Cygnus Loop.

Formation of the nebula was due to a large star 20 times the size of our sun exploding between 10 and 20 thousand years ago as it went Super Nova. The explosion would have been so bright it would have been brighter than Venus and possibly visible in the daytime. The current area of the Super Nova Remnant is almost 3 degrees in diameter which is 6 times that of the Moon.

 

Many astrophotographers focus on 3 areas known as the Eastern Veil Nebula, The Western Veil Nebula (or Witched Broom) and Pickering Triangle. I have posted these three images separately to showcase their intricate details.

 

The full image is a mosaic of 4 panels taken over 12 nights and a combined imaging time of 39.5 hours. It is a huge image by my standards and can be viewed in full resolution on my Astrobin page by following the links below.

 

Full Mosaic: astrob.in/9qtk5q/0/

Eastern Veil: astrob.in/c9lhp7/0/

Western Veil: astrob.in/jped5t/0/

Pickering’s Triangle: astrob.in/v45w06/0/

 

Thank you for looking.

 

Technical summary:

Captured: 12 Nights in June and July 2024

Location: Turismo Astronómico, Los Coloraos, Gorafe, Spain

Bortle Class: 3

 

Total Integration: 39h 30m

Filters: Optolong L-Ultimate Narrowband

Pixel Scale: 1.4 arcsec/pixel

 

Telescope: Skywatcher Esprit 100ED

Image Camera: ZWO ASI2600MC Pro

Mount: Skywatcher EQ 6R Pro

 

Capture software: NINA, PHD2

Editing software: PixInsight, Adobe Lightroom

 

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...

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

This is my first image captured with the RC8 scope including the CCDT67 focal reducer.

 

Image is H-alpha, O III and Sulphur II in HST palette plus RGB for the stars. 13.5 hrs of data in total captured during August.

 

T: Altair Astro RC8 plus CCDT67 reducer

C: QSI 583 plus Lodestar guider

M: Modded EQ6

The visual portion of the Cygnus Loop also known as the Veil Nebula, Cirrus Nebula or the Filamentary Nebula is located in the constellation Cygnus. The area includes the components: NGC6990, "Western Veil" or "Witch's Broom", NGC6992 "Eastern Veil", and Pickering's Wedge, or Pickering's Triangular Wisp.

 

The entire area is the remnant of a supernova explosion that occurred between 5000 to 8000 years ago and has been expanding ever since.

 

Distance from Earth: about 1470 light years

  

This wide-field shot was taken with a Canon 200mm F2.8 L Ultrasonic lens at f/2.8 guided by an 80mm APO refractor. The Hubble Space Telescope or HST Palette was used to combine the 3 sets of filtered exposures.

Camera: SBIG ST8300M (-10C)

Mount: Losmandy G11

 

Filters:

Ha : 7 x 15min.

OIII : 7 x 15min.

SII : 8 x 20 min

 

Total Exposure: 6 hours and 10 minutes

This is a large supernova remnant, an expanding cloud of shocked gas, born of the death explosion of a massive star. Light from the original supernova explosion reached Earth over 5,000 years ago. This is the western section of the veil nebula complex which spans over 3 degrees of sky.

 

The weather has been pretty miserable here lately so thought I'd rework this data from last year a bit and added some star colour from the Canon 450D that I didn't get around to doing last year. Its based on the right hand panel from the original mosaic at:

www.flickr.com/photos/42731607@N08/6267814368/in/photostream

 

Tech details below:

 

TMB 92ss + Borg DG-L .85x reducer @ F4.7

Mount - EQ6

Starlight Xpress SXVR-H18 @ -20 degs

QHY5 PHD guiding, guidesope Meade 127

 

Ha - Baader 7nm - 15x12min

O3 - Baader 8nm - 15x12min

 

6 hours total

 

Messed about trying different colour blends a fair bit but ended up with:

Red - Ha

Green - OIII 70% Ha 30%

Blue - OIII 90% Ha 10%

 

Captured in Nebulosity 2

Calibration, stack and DDP in Images Plus

Curves + all other processing PS CS3

 

NGC 6960 (The Western Veil or the Witch's Broom) and Pickering's Triangle in the vast Veil Nebula.

 

Equipment Used :

 

Sky-watcher Esprit 80

ASI1600MM-C (cooled to -15)

ZWO 8 position filter wheel

Baader 7nm Ha 1.25" filter

HEQ5 Pro Goto

 

Guiding :

 

Sky-watcher 50mm finder/guider

QHY5L-IIc

PHD2

 

Image acquisition :

 

16 x 300 second lights

20 x 300 second darks, temp matched

No flats or bias

APT

This is a large supernova remnant, an expanding cloud of shocked gas, born of the death explosion of a massive star. Light from the original supernova explosion reached Earth over 5,000 years ago. Also known as the Cygnus Loop, the Veil Nebula now spans nearly 3 degrees or about 6 times the diameter of the full Moon in the sky.

 

The data for this image was gathered over a number of separate nights mid Aug to mid Sept 2011. Pleased with how this turned out, the previous cooling and shutter issues with the camera now fixed, yay! (Thanks to Terry @ SX).

 

Tech details below:

 

TMB 92ss + Borg DG-L .85x reducer @ F4.7

Mount - EQ6

Starlight Xpress SXVR-H18 @ -20 degs

QHY5 PHD guiding, guidesope Meade 127

 

2 pane mosaic. Each pane:

 

Ha - Baader 7nm

- 15x12min

O3 - Baader 8nm

- 15x12min

 

12 hours total

 

Messed about trying different colour blends a fair bit but ended up with:

Red - Ha

Green - OIII 70% Ha 30%

Blue - OIII 90% Ha 10%

 

Captured in Nebulosity 2

Calibration, stack and DDP in Images Plus

Curves + all other processing PS CS3

 

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...

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 is a cloud of heated and ionized gas and dust in the constellation Cygnus hence its alternate name The Cygnus Loop.

 

Formation of the nebula was due to a large star 20 times the size of our sun exploding between 10 and 20 thousand years ago as it went Super Nova. The explosion would have been so bright it would have been brighter than Venus and possibly visible in the daytime. The current area of the Super Nova Remnant is almost 3 degrees in diameter which is 6 times that of the Moon.

 

Many astrophotographers focus on 3 areas known as the Eastern Veil Nebula, The Western Veil Nebula (or Witched Broom) and Pickering Triangle.

 

The full image is a mosaic of 4 panels taken over 12 nights and a combined imaging time of 39.5 hours. It is a huge image by my standards and can be viewed in full resolution on my Astrobin page by following the links below.

 

Full Mosaic: astrob.in/9qtk5q/0/

Eastern Veil: astrob.in/c9lhp7/0/

Western Veil: astrob.in/jped5t/0/

Pickering’s Triangle: astrob.in/v45w06/0/

 

Thank you for looking.

 

Technical summary:

Captured: 12 Nights in June and July 2024

Location: Turismo Astronómico, Los Coloraos, Gorafe, Spain

Bortle Class: 3

 

Total Integration: 39h 30m

Filters: Optolong L-Ultimate Narrowband

Pixel Scale: 1.4 arcsec/pixel

 

Telescope: Skywatcher Esprit 100ED

Image Camera: ZWO ASI2600MC Pro

Mount: Skywatcher EQ 6R Pro

 

Capture software: NINA, PHD2

Editing software: PixInsight, Adobe Lightroom

 

A long, long time ago, a star exploded in a supernova, and what we see is all that's left of it: gas clouds drifting apart until one day, a long long time from now, they will have dissipated

back into the void.

 

This is the Cygnus Loop, including the Veil Nebula.

 

Imaged over four separate nights, totaling five hours and 47 minutes of data, from my balcony in "basically downtown" Montreal.

 

167 x 60s Baader UHC-S filter

110 x 48s Baader UHC-S filter

92 x 60s Baader Neodymium filter

  

Olympus Pen-F Digital

Askar FMA180

Unguided on a Sky Watcher Star Adventurer 2i

 

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.