On April 15th, 2023 minor planet (270) Anahita passed by galaxy NGC 4939. I captured this encounter with a remote telescope in Auberry, California. Unfortunately this was about 16 hours after the close encounter, but the minor planet is still in the field of view. To my suprise I found an other minor planet, which is the still unnamed (35954) 1999 KY15.

The image is a stack of 20 frames of 180 seconds each. The minor planets are only shown in 7 frames each, to better show the movement.

Equipment: Planewave 24" (0,61m) CDK, F=3962mm, f/6.5, FLI-PL09000 CCD camera, Mount: Planewave Ascension 200HR.

Processing with AstroPixelProcessor and Photoshop.

An animation of the movement can be found here: www.jmwill.de/deep-sky-aufnahmen.html#a2584

Markarian's Chain is a group of galaxies in the constellation of Virgo, the galaxies when viewed from earth are in a curved line hence the name Markarian's Chain, they obtained the name from Benjamin Markarian who dicovered the common motion of the galaxies back in the early 1960s, there are quite a number of galaxies within the group, but the chain itself consists of M84, M86, NGC4477, NGC4473, NGC4461, NGC4458, NGC4438 and NGC4435 which are all visible in this image.

This image is a 2-Panel Mosaic, as the QHY183M on the SharpStar 15028HNT doe snot give me enough of a field of view to capture it in a single frame

Each Panel consists of

51x150S in Red Filter

51x150S in Green Filter

51x150S in Blue Filter

Darks, Flats and Flat Darks were applied in the image stacking process

Total Capture time: 12.8 Hours, total Image Size 34.9mpx

Acquisition Dates: March 3, 2020 , March 17, 2020 , March 23, 2020 , March 24, 2020 , March 27, 2020 , March 28, 2020 , April 12, 2020 , April 15, 2020 , April 16, 2020

Equipment Details:

Imaging Camera: Qhyccd 183M Mono ColdMOS Camera at -20C

Imaging Scope: SharpStar 15028HNT Hyperboloid Astrograph

Guide Camera: StarlightXpress Lodestar X2

Guide Scope: Sky-Watcher Finder Scope

Mount: Sky-Watcher EQ8 Pro

Focuser: Primalucelab ROBO Focuser

FIlterwheel: Starlight Xpress Ltd 7x36mm EFW

Filters: Astronomik Red, Green and Blue

Power and USB Control: Pegasus Astro USB Ultimate Hub Pro

Acquisition Software: Main Sequence Software. Sequence Generator Pro

Calibration and Stacking: Astro Pixel Processor

Mosaic Panel Merging: Image Composite Editor

Processing Software: PixInsight 1.8.6

The Cave Nebula (Sh2-155) is a Hydrogen cloud (in the center) with a brighter rim and a star forming region in the large molecular cloud known as Cepheus B. The stars of the Cepheus OB3 association are less than 100,000 years old. Low mass star formation is occurring at a high rate within the dust clouds of Sh2-155.

The blue reflection nebula (lower left) is VDB-155.

Just south (in this image to the left) of the Cave nebula we can see some strange orange Nebulosity, the home of some Herbig Haro Objects. HH168, HH169 and HH174 are locations, where a star is born, still surrounded by dust and nebulosity, already shaped into a rotating disk. This material blocks the light of the new-born stars and the pressure can be released only at the disk poles and Jets of material are escaping from their northern and southern poles.

RGB: 72,71,70 x 600 sec bin 1x1: 22,23,24,25,26,27,28,29,30 July 2017

Ha: 63x 600 sec bin 1x1: 31 Jul, 2,3,4 aug 2017

Total integration time: 46 hrs.

QHY16200 CCD camera/ Esprit 100 f5.5/ 10 Micron GM2000 HPS

Knight Observatory, Tomar

NGC7882 is a large Emission Nebula in Cepheus, whilst I tried to obtain some OIII data, there appears to be very little OIII Data within this particular target. NGC7822 lies approximately 2900 light years from Earth and spans somewhere in the region of 100 light years across, there are a number of "Pillars of Creation" scattered throughout this large nebula.

RA: 00h01m08.59s

Dec: 67°25'17.00"

Constellation: Cepheus

Designation: NGC7882 / Sharples 171

Image Details: 101x300S at Gain 100

Darks: 101 Frames

Flats: 101 Frames

Bias: 101 Frames

Acquisition Dates: Nov. 3, 2020 , Nov. 4, 2020 , Nov. 5, 2020 , Nov. 6, 2020 , Nov. 7, 2020

Total Capture time: 8.4 hours

Equipment Details:

Imaging Camera: ZWO ASI6200MC Pro 62mpx Full Frame OSC

Imaging Scope: SharpStar 15028HNT Hyperboloid Astrograph

Guide Camera: StarlightXpress Lodestar X2

Guide Scope: 365Astronomy 280mm Guide Scope

Mount: Sky-Watcher EQ8 Pro

Focuser: Primalucelab Sesto Senso V2

Filter: Optolong L-eXtreme Dual Band Filter

Power and USB Control: Pegasus Astro USB Ultimate Hub Pro

Acquisition Software: Main Sequence Software. Sequence Generator Pro 3.2

Calibration and Stacking: Astro Pixel Processor

Processing Software: PixInsight 1.8.8 and EZ Processing Suite for Star Reduction

Vacuum cleaner Galaxy (#M109) in LRGB mode. Around 10 hours of integration. This Galaxy is around 60 Million lightyears away from earth and has a diameter of 110 000 Lightyears. It was post-processed in Astropixelprocessor, Pixinsight and Photoshop.

Camera was #qhy268m

#C11 at 2000mm focal lenght

#EQ8R

#youresa

#astrophotography #longexposure

Fujifilm X-T10, Samyang 135mm f/2.0 @ f2.0, ISO 1600, 33 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken Nov 1 under Bortle 3/4 skies.

I love imaging Orion. My goal with this shot was to include the Flame and Horsehead Nebulae, Barnard's Loop, Messier 78, and Lynds' Dark Nebula (LDN) 1622, the Boogeyman Nebula (upper left). It seemed like a good target for Halloween night.

When I first got into astrophotography, galaxies were what I was most interested in imaging. I quickly realized that to image most galaxies well (except for the few large ones like M31 and M33), I needed a long focal length lens and accompanying highly accurate tracking. My budget didn't allow for that, so I adjusted my aspirations and focused on widefield shots with a simple tracker. Still, I love a good galaxy picture and anticipate stepping up to more sophisticated equipment someday.

I turned my back on Orion last night (it was difficult) and shot north again for the first time in awhile. I didn't have high expectations for what I'd get from imaging Galaxy IC 342 with a 135mm lens. I'm guessing somebody has tried it, but I couldn't find any examples online.

I'm happier than anticipated with this image. Although small, there is a good variety of objects in this extent; in addition to IC 342, it contains 1) the yellow reflection nebula around star BE Camelopardalis in the center, 2) a dark nebula on the left (I think IREC 193), 3) star cluster NGC 1502 in the upper left, and 4) the asterism Kemble's Cascade below NGC 1502 (although it's difficult to distinguish among the surrounding smaller stars).

Here's a thorough report about the reflection nebula around star BE Cam that clued me into its existence: www.sternwarte-baerenstein.de/upload/be-cam_reflection_ne.... Also an excellent APOD of IC 342: apod.nasa.gov/apod/ap170708.html

I'm looking forward to doing some more widefield galaxy shots this spring.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 56 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken on Feb. 19, 2020 under Bortle 3/4 skies. I've cropped it but not extensively.

I was excited to capture 30 minutes of imagery of my first comet, C/2017 T2 PANSTARRS, on Thursday, January 30, before clouds moved in.

Since I wasn't sure I'd get anything because of clouds, I didn't bother to drive to my Bortle 3/4 dark site, but instead shot from my Bortle 5 backyard, 60 x 30 seconds. I combined this imagery with some better imagery of the Heart and Soul Nebulae from this past fall (47 x 60 seconds under Bortle 3/4 skies), to create this small mosaic (the Heart and Soul Nebulae turned out a bit ugly from my Bortle 5 backyard). I was impressed with how well Astro Pixel Processor combined the imagery of such differing quality.

Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 60 x 30 sec for left half, 47 x 60 for the right half, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing and mosaicking with Astro Pixel Processor and GIMP, double cluster and comet imaged on Jan. 30, 2020 from my Bortle 5 backyard.

Dati: 36 x 300 sec ( 3 ore) gain 5 @ -10° c + 70 dark + 30 flat e darkflat

Filtro: Astronomik UV/IR Block L2

Montatura: EQ6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: magzero mz5-m su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

Temperatura esterna: 25 ° C - Umidità 75%

27 * 15 sec exposures only. Unguided

Camera at 0 degrees C.

No darks/flats/bias frames

Imaged from middle of Brisbane city

NGC7380 is an open cluster embedded in clouds of dust and gas at 7200 Light years in the constellation Cepheus.. This Image is made with Esprit 100 refractor+ QHY16200 CCD camera @ -20Celcius.

(45Red, 36Green, 47Blue x300 sec + 48Ha x600sec, total integration time: 18.5 hrs). Processed with AstroPixelProcessor and Pixinsight.

Imaging dates: 20 june, 7,9,14,17,18 en 21 july2018.

en.wikipedia.org/wiki/NGC_7380

Knight Observatory, Tomar.

Altair Astro Starwave 102ED-R (2017), HEQ5 Pro (Rowan Belt Drive), Berlebach Tripod, Altair IMX178MC Hypercam, Altair 0.6x Focal Reducer, Pegasus Stepper Motor Focuser, 21 x 30 Second Exposures. Processed in AstroPixelProcessor Finished in Photoshop and Lightroom.

I might have overprocessed this one - the data was so nice. Bortle 2 skies make for easy processing.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 70 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken Mar. 18, 2020 from Bortle 2 skies.

The Pacman Nebula (NGC 281) is an emission nebula in the constellation Cassiopeia in the northern sky, 9,500 light-years from Earth. (Wikipedia)

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Mount: SkyWatcher HEQ5 Pro

Guiding: ZWO ASI 120MM Mini USB 2.0 Mono Camera - Orion 50mm Guide Scope

Filter: Astronomik CLS CCD EOS APS-C Clip-Filter

Camera: Canon EOS 70D (full spectrum modified)

Askar 80 PHQ F7.5 Quadruplet Astrograph Telescope

Focal length: 600mm

Astronomik CLS CCD Clip Filter

15 x 360 seconds frames - ISO 800 - f7.5

1 1/2hr total Integration

Darks: 20 frames

Flats: 20 frames

Bios: 20 frames

DarkFlats: 20 frames

Bortle 5/6

Apps: N.I.N.A. > PHD2 > ASCOM

Processing: AstroPixelProcessor > PixInsight > Photoshop >Topaz > Photoshop

Sky-Watcher Quattro 150P f/3.5

Player One Uranus-C OSC (Offset:20 / Gain:211 [HCG] )

UV/IR filter

240 x 15sec. subs (60 mins.)

Processed in Astro Pixel Processor and Affinity Photo.

This is an uncropped version of this wonderful pair of nebulae with RGB stars. I captured it as an 2-panel mosaic with 26 x 240 secs for each. Hope you like it!

Celestron RASA 8

Celestron Motorfocus

IDAS NBZ Dualband Filter

EQ6-R Pro

ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)

25 x 240 secs pro Mosaik (2 Teile)

RGB (Sterne): 50 x 5 secs pro Teil

N.I.N.A., Guiding mit ZWO ASI 462MC und PHD2

Astropixelprocessor, Photoshop, Pixinsight

Bortle 5

Dati: 26 x 4 min. 800 Iso + 15 Dark + 25 flat e darkflat software: AstroPixelProcessor e Photoshop CS2 Strumenti: ottica Takahashi FSQ106 f/5 su Skywatcher EQ6 pro - Canon 40D CentralDS. 10/08/2020 - Castelletta (AN), Temp. esterna: 18° C temperatura al sensore 0,00°C - Umidità 75%

One of my favorite targets - the integrated flux nebula (IFN) or galactic cirrus is faint dust illuminated by our galaxy, and there happens to be a nice concentration of it in the direction of Bode's Nebulae (Bode's (M 81) and Cigar (M 82) Galaxies). The Angel Nebula, which is made of IFN, is in the lower left corner. This is an improvement over my last attempt at this target - shooting raw and more integration time made a difference.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 78 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken on Feb. 21, 2020 under Bortle 3/4 skies.

Nov 2020 update: The color of M 81 on my original version had always irked me a bit. I reprocessed it and now M 81's color is much better (in my opinion).

Christmas Eve 2019

Altair 294c

Altair 72EDF Deluxe

Stacked in AstroPixelProcessor

Processed in PixInsight

3-panel mosaic, 20 300 sec. and 71 360 sec. exposures. Explore Scientific ED102 102mm f/7 refractor, ZWO ASI294MC cooled camera, H-alpåha 7nm filter, iOptron CEM25P mount, auto-guided, ASIAir controller. Processed in Astro Pixel Processor and Lightroom.

I have not imaged M42 or the Great Orion Nebula for a few years, but with the field of view the ZWO ASI6200MCPro offers on the 15028HNT I just could not resist the temptation, this image is a blend of data from the L-eXtreme Filter and the Astronomik CLS-CCD filter

RA: 05h35m17.31s

Dec: -05°23'28.00"

Constellation: Orion

Designation: M42

Image Details:

60x90S at Gain 0 - CLS-CCD Filter

88x150S at Gain 0 - L-eXtreme Filter

32x30S at Gain 0 - L-eXtreme Filter

Darks: 101 Frames

Flats: 101 Frames

Bias: 101 Frames

Acquisition Dates: Jan. 3, 2021 , Feb. 18, 2021 , March 5, 2021 , March 6, 2021 , March 7, 2021

Total Capture time: 5.4 Hours

Equipment Details:

Imaging Camera: ZWO ASI6200MC Pro 62mpx Full Frame OSC

Imaging Scope: SharpStar 15028HNT Hyperboloid Astrograph

Guide Camera: StarlightXpress Lodestar X2

Guide Scope: 365Astronomy 280mm Guide Scope

Mount: Sky-Watcher EQ8 Pro

Focuser: Primalucelab Sesto Senso V2

Filter: Optolong L-eXtreme 2"

Filter: Astronomik CLS-CCD 2"

Power and USB Control: Pegasus Astro USB Ultimate Hub Pro

Acquisition Software: Main Sequence Software. Sequence Generator Pro 3.2

Calibration and Stacking: Astro Pixel Processor

Processing Software: PixInsight 1.8.8 and EZ Processing Suite for Star Reduction

The Jellyfish Nebula (left-center) is a supernova remnant. The Monkey Head Nebula is the bright emission nebula near the bottom; the monkey head is upside down looking right here. Both are quite close - the Jellyfish Nebula is an estimated 5,000 light years from earth; the Monkey Head is an estimated 6,400 light years from earth. The large star cluster near the top is Messier 35 (NGC 2168). NGC 2158 is the other smaller star cluster to the lower right of Messier 35.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 150 x 30 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken Mar. 15, 2020 from my Bortle 5 backyard. The Monkey Head and brightest part of the Jellyfish are bright - they were apparent even on my unprocessed subs from my Bortle 5 backyard.

Dati: 43 x 300 sec a gain 5 e offset 25 a -15° c + 33 dark + 25 flat e darkflat

Filtro Astronomik UV/IR Block L2

Montatura: EQ6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: magzero mz5-m su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

Temperatura esterna: 10 ° C - Umidità 95%

Reprocess of data from a few months back.

Object Information - Cigar Galaxy (Left)

* Designation : M82, NGC 3034

* Type : Starburst Galaxy

* Magnitude : 8.4

* Location (J2000.0): RA 09h 55m 52s / DEC +69° 40' 47"

* Approximate distance : 11.4 - 12.4 million lightyears

Object Information - Bode's Galaxy (Right)

* Designation : M81, NGC3031

* Type : Spiral Galaxy

* Magnitude : 6.9

* Location (J2000.0): RA 09h 55m 33s / DEC +69° 03' 55"

* Approximate distance : 11.8 million lightyears

Hardware

* Mount : Celestron CGX

* Imaging Scope : SkyWatcher Explorer 150PDS

* Imaging Camera : Canon EOS 80D (unmodified)

* Guide Scope : 50mm f/4

* Guide Camera : ZWO ASI 120MM

Exposures

* Single Exposure Length : 120sec

* ISO : 1600

* Light Frames : 60x

* Flat Frames : None

* Dark Frames : 20x

* Bias Frames : 25x

* Total Integration Time : 2h00m

* Capture Dates : 2018-02-14

Capture Software

* Astro Photography Tool

* PHD2 Guiding

Processing Software

* Astro Pixel Processor 1.061

* Adobe Photoshop CC

* Astronomy Tools Action Set

10*180s subs = 30 minutes total integration time. Using the Avalon m-zero mount with near perfect guiding, amazing considering I guestimated polar alignment. Imaging telescope was the William Optics GT71 with FF 6A2 that I have finally got working with correct back focus. Still some walking noise from the bad PA,

Camera was the ASI1600mm at 0 degrees. Calibrated lights only in APP.

Again balcony astro, Brisbane city, Bortle 8 and a full moon.

IC5146 (The Cocoon Nebula) and the dark "Tail" Barnard 168 in the Constellation Cygnus imaged with an Esprit 100 refractor and QHY16200 CCD. 21 x 600 seconds Red, 21 x 600 seconds Green and 21x 600 seconds Blue.

Imaged on 2,3,13,14,15,16,17,21 and 22 July 2017. Processed with APP and Pixinsight.

Knight Observatory, Tomar

COBS (Comet OBSveration database) contributions indicates that C/2021 Leonard had a significant outburst just prior to its recovery in the evening sky on December 15/16 2021. The comet flared to mag 3.5 and then quickly subsided to mag 5 by December 18. These three images were captured with a Vixen VSD 100 mm telescope and a Nikon Z7II camera mounted on a Vixen SXP. About 2.5 minutes of images were acquired with subs and stacked with AstroPixelProcessor and finished with Photoshop. With clouds and haze in Tucson and Comet Leonard gaining altitude each day the differences shown are not normalized and are a qualitative product of the captures.

This complex of reflection nebulae lies some 6,000 light-years away, in the constellation Cygnus.Obscuring interstellar dust clouds appear in silhouette against reddish hydrogen emission nebulae, along with the dusty blue reflection nebulae. Ultraviolet radiation from the massive, hot, young stars of the extensive Cygnus OB2 association ionize the region's atomic hydrogen gas, producing the characteristic red glow as protons and electrons recombine. Embedded Cygnus OB2 stars also provide the blue starlight strongly reflected by the dust clouds.

Telescope: Esprit 100 APO refractor.

Camera: QHY16200 CCD @-10 (RGB) and -20C (Ha).

28x 300sec Red filter

24x 300sec Green filter

28x 300sec Blue filter

23x 900sec H-alpha filter (6nm)

(12.4 hrs total integration time)

Ha Imaged on 20/5, 8/6, 27/7,28/7,30/7 2017.

RGB Imaged on 4/4, 5/4, 28/7, 29/7 2019.

Processed with AstroPixelProcessor and Pixinsight.

Knight Observatory, Tomar

Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 41 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken Jan 10, 2019.

This is a reprocess of data from earlier in the year - this time I used the 'remove light pollution' and 'HSL selective color' tools of Astro Pixel Processor after integrating light frames in DSS and before editing in GIMP. Also, my flats were introducing artifacts so I didn't use them, but instead corrected vignetting with the 'remove light pollution' tool.

I'm much happier with this version - the color and definition of the nebula are much better, and seem to be accurate in comparison with other images.

William Optics GT71 with ASI 294 MCPro

30 * 60 sec subs

Gain = 300

Temp = -10 Deg C.

Mounted on the Sky Watcher Star Adventurer and calibrated using AstroPixel Processor. Lights only.

Taken at Dayborough, Queensland, Bortle 4

32 * 88 secs at ISO 1600, f6.1 - unguided tracking.

Although there is a degree of trailing on the stars, it's a pleasing result given that the lens is at 200mm, so a 400mm FF equivalent. (OLYMPUS M.75-300mm F4.8-6.7 II)

Used the Skywatcher Star Adventurer for tracking & Pole Master for polar alignment. Astro Pixel Processor for all the image calibration, only jpg as still learning software (lights and darks only) then export to Photoshop.

Pinwheel Galaxy Messier 101

© Julian Köpke

Reprocesado de flic.kr/p/UMDVfy con AstroPixelProcessor y Lightroom

amburger Galaxy NGC 5128; 30 x 180s; ISO 2200; Farm Kiripotib, Namibia

© Julian Köpke

The 48 panel version does not show the Veil nebula so i decided to extend to 8x8 panels. This 16 panel (2x8) strip shows 2 main "attractions". This version is made with single 15 minute exposures using a 6nm Ha filter. (QHY16200/ Esprit 100 on GM2000 unguided) Software: Sequence generator pro/ Astro Pixel Processor.

Image reduced to 25%.

Knight Observatory, Tomar

Lights - 30x600"

Darks - 10x600"

43x 600 sec( 7.2 hrs). through 6nm Ha filter and Esprit 100 refractor/ QHY16200 CCD camera @ -20C. On 17,18,19 and 20 November 2017.

Knight Observatory, Tomar

Fujifilm X-T10, Samyang 135mm f/2.0 @ f2.0, ISO 1600, 60 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken October 26 under Bortle 3/4 skies.

The faint haze on the right edge is integrated flux nebulae (IFN).

Nov. 2020 update: Tweaked color.

This wonderful dark nebula in Cepheus (Barnard 150 / LDN 1082) is commonly referred to as the "Seahorse Nebula", but in the orientation of my image, the structure reminds me much more of a mermaid, drifting through the cosmos with her long hair.

Its counterpart is played by an H-Alpha cloud, which already belongs to the adjacent "Flying Bat Nebula" (Sh2-129). To bring out this faint area, I captured 7 hours of Ha and then combined it with 10 hours and 24 minutes of RGB. I hope you like it!

Celestron RASA 8 f/2

Celestron Motorfocus

EQ6-R Pro

ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)

RGB: 326 × 60″ (5h 26′)

TS 2600 MP (Gain 100, Offset 200, -10°)

RGB: 51 × 60″ (5h 51′), 131 × 120″ (4h 22′), 70 × 10″ (11' 40'′)

Baader H-Alpha Highspeed 3.5nm: 210 × 120″ (7h)

Total: 17H 24′ 40″

Bortle 5 (19.50 SQM)

N.I.N.A., Guiding with ZWO ASI 120MM and PHD2

Astropixelprocessor, Photoshop, Pixinsight

Dati: 29 x 300 sec a gain 5 e offset 25 a -10° c + 70 dark + 25 flat e darkflat

Filtro Astronomik UV/IR Block L2

Montatura: eq6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: magzero mz5-m su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

The Rosette Nebula (NGC 2244).

> The Rosette Nebula (also known as Caldwell 49) is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. — Wikipedia

Stack of 20 exposures 3 minutes long at ISO 1600. Stacked in AstroPixelProcessor, and edited in Photoshop. I think this is a little grainy due to the higher ISO and using LENR instead of darks.

I used a SkyWatcher Esprit 100 telescope on a HEQ 5 Pro tracking mount, and the Nikon z 50.

Polaris & ses nébuleuses sombres

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Aujourd’hui, je vous fais découvrir les nébuleuses sombres qui accompagnent l’étoile polaire.

Cette étoile sert depuis des millénaires comme point de repère entre autre pour la navigation. Elle nous sert aussi à nous aligner pour nos montures équatoriales puisque toutes les constellations tournent autour de Polaris.

Que viennent faire les nébuleuses sombres dans cette histoire ?

Elles sont présentes autour de notre étoile polaire. En anglais, elles sont appelées IFN pour « Integrated Flux Nebula ». Elles sont principalement composée d’hydrogène moléculaire et d’hélium.

Cependant, ce n’est pas aisé de pouvoir les photographier. D’une part, comme leur nom l’indique, elles sont obscures.

Ce sont des nuages denses qui absorbent la lumière des étoiles en arrière plan.

D’autre part, au moment de la prise de vue, elles sont invisibles. Très pratique me direz vous… Même constat au moment de l’empilement, il n’y a que le traitement qui permettent de les mettre en valeur.

A titre d’exemple la tête de cheval (IC434) dans la constellation d’Orion fait partie des nébuleuses sombres les plus connues.

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Photographier sur deux nuits pour obtenir,

300 lights d’une minute soit 5h de temps d’intégration

Offset + Flats, No Dark.

Bortle 4

Traitement AstroPixelProcessor, Photoshop.

Starforming Nebula IC 410 in the constellation Auriga in the light of sulfur (red), hydrogen (green), and oxygen (blue). 19 hours total exposure, Explore Scientific ED102 102mm f/7 refractor, ZWO ASI294MC camera, dual narrow-band filter (Hα,[O III]), [S II] filter, iOptron CEM25P mount, Processed in Astro Pixel Processor and Lightroom.

Date: Nov. 1, 29 / Nov.29, 2019 /Dec. 27, 2019

Location: Amagi Highland, Shizuoka Pref., Japan / Asagiri Arena, Shizuoka Pref., Japan

Optics: SIGMA 135mm F1.8 DG HSM | Art (f/2.2)

Mount: SWAT-310 V-spec(single axis autoguiding)

Autoguider: QHY5L-II, LM75JC, PHD2

Camera: Canon EOS 6D (SEO-SP4)

ISO speed: 1600

Exposure: 30x180sec.x9panels

Processing: PixInsight, Astro Pixel Processor

Date: 22:55~25:30JST Nov. 26, 2022

Location: Asagiri Arena, Shizuoka Pref., Japan

Cloud Coverage: < 5%

Temperature: 5.9C ~ 9.3C

Humidity: 69% ~ 84%

Wind: 2 ~ 8kt

Lens: SIGMA 135mm F1.8 DG HSM | Art (f/2.2)

Mount: RainbowAstro RST-135

Autoguider: QHY5L-II, LM75JC, PHD2

Camera: Canon EOS 6D (mod/SEO-SP4)

ISO speed: 1600

Exposure: 45x90sec.x3panels

Processing: PixInsight, AstroPixelProcessor

Imaging the Western Veil Nebula in Cygnus in HA and 03 resulting in an HOO image.

200 minutes of O3

100 mins of HA.

4hrs imaging time all up

ASIi83MM at 0 degrees, gain 111

m-zero mount with rough PA

VdB 14 & 15 (left in the picture) are two very beautiful reflection nebulae, which also contain a few reddish emission components and belong to an even larger dust cloud in the inconspicuous constellation Camelopardalis. VdB 15 is the larger, lower area of the nebula and surrounds the star CE Cam, a variable supergiant. VdB 14, the upper part of the nebula, is located near the star CS Cam, which is also a supergiant. The distance to earth is around 3,000 lightyears.

The open star cluster Stock 23 can be found on the right in the picture and is also a nice object for visual observation. Its distance is estimated at 1,240 lightyears and it is surrounded by several spectacular dark clouds. It is embedded in the large but faint emission nebula SH2-202, which extends over the entire right half of the picture.

Equipment:

Celestron RASA 8 f/2

Celestron Motorfocuser

EQ6-R Pro

ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)

RGB (no filter): 300 × 30″ (2h 30′)

RGB (IDAS LPS-D3 Filter): 260 × 120″ (8h 40′)

TS 2600 MP Mono (Gain 100, Offset 50, -10°)

Ha: (Baader H-alpha Highspeed Ultra-Narrowband 3.5nm Filter): 130 x 60 (2h 10')

Total: 13h 20'

Flats, Darkflats, Dithering

N.I.N.A., Guiding with ZWO ASI 120MM and PHD2

Astropixelprocessor, Photoshop, Pixinsight

Date: November 23, December 8 & 15, 2022

Location: Hannover, Germany (Bortle 5-6)

71x300s, gain 150, -10C, H-alpha

Crescent Venus in daylight.

30 1/1000sec. exposures, Explore Scientific 102mm f/7 refractor, ASI294MC camera, UV/IR cutoff filter, iOptron CEM25P, ASIAir controller, processed in Astro Pixel Processor, Lightroom, and Photoshop.

More information on how this photo was made:

www.zoltlevay.com/blog/2022/1/venus-in-the-daytime