Finally was successful in this shooting session after two years of trials and errors with countless fails of guiding and imaging. I was able to acquire a little over 1h10min for this image.

This was the very first DSO image I've seen when I was a kid on NASA's APOD, it amazed me on the first sight.

Clear skies everybody!

IC 2177 is a region of nebulosity that lies along the border between the constellations Monoceros and Canis Major. The region is often referred to as the Seagull Nebula, and includes a larger nebulous region as well and open clusters NGC 2335 and NGC 2343 and a small reflection nebula named NGC 2327 (in the wing of the Seagull). The open cluster Messier 50 (M50 or NGC 2323) can be seen in the upper left corner.

Tech Specs: Williams Optics Redcat 51 Telescope, ZWO ASI071MC camera running at -10F, total capture 2 hours and 10 minutes using 300-second exposures, Optolong L-eXtreme 2” filter, Sky-Watcher EQ6R-Pro mount, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: February 4, 2024. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

♪ ♫

The Triangulum Galaxy is a spiral galaxy approximately 3 million light years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598, and s the third-largest member of the Local Group of galaxies, which includes the Milky Way, the Andromeda Galaxy and about 44 other smaller galaxies.

With a diameter of about 50,000 light years, the Triangulum galaxy is the third largest member of the Local Group of galaxies. It may be a gravitationally bound companion of the Andromeda Galaxy Triangulum may be home to 40 billion stars, compared to 400 billion for the Milky Way, and 1 trillion (1000 billion) stars for Andromeda. from wiki

...

autori: xamad e Valentina Saltarelli (stoica amazzone alla sua prima impresa astrofotografica al gelo ♥)

Telescopio: APO Triplet 130/910 mm

Camere di acquisizione: Canon / CentralDS EOS Astro 50D

Montature: Sky-Watcher EQ6 Pro

Telescopio guida: 80/600

Camere di guida: lacerta mgen2

Riduttori di focale: Flattener 2"

Software: DeepSkyStacker, Adobe Lightroom 3, Silicon Fields StarTools 1.3, Noel Carboni's Astro Tools for PhotoShop

Filtri: Orion SkyGlow 2" Imaging Filter

Date: 25 novembre 2013

Pose:

Orion SkyGlow 2" Imaging Filter: 10x480" ISO1000 -16C bin 1x1

Orion SkyGlow 2" Imaging Filter: 5x180" ISO2500 -16C bin 1x1

Orion SkyGlow 2" Imaging Filter: 10x360" ISO2500 -16C bin 1x1

Integrazione: 2.6 ore

Dark: ~20

Flat: ~20

Fase lunare media: 57.79%

Scala del Cielo Scuro Bortle: 3.00

Reprocessed here

Three clear nights on the bounce - whatever next?! :)

Took advantage of the weather to give this a really good crack, something I've been waiting to do since the arrival of the ED80. This is full frame, so the focal length is ideal. As near as dammit 8 hours total exposure, made up of various sub lengths and iso settings. The variation in iso seems to improve the overall noise in the final tif, so I was able to stretch this a little further (some would say too far!). Not sure if it's a little too contrasty - all a matter of personal taste I suppose. Overall, I'm very pleased with this :)

SW ED80/EQ5, cropped

Nikon D70 modded, Baader Neodymium filter

18 x 4 mins iso 1600

30 x 6 mins iso 1250

22 x 10 mins iso 800

Guiding: Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS and processed in CS5

Equipment

Imaging Telescopes Or Lenses

TS-Optics 6" f/4 UNC Newtonian Telescope - Carbon

Imaging Cameras

ZWO ASI 183 MM PRO

Mounts

Sky-Watcher NEQ6-Pro

Filters

Baader Ha 1.25" 7nm · Baader Planetarium SII 1.25" 8nm · Baader Planetarium O3 1.25" 8.5nm

Accessories

ZWO EAF Electronic Auto Focuser · TSOptics TS Off Axis Guider - 9mm · Pal Gyulai GPU Aplanatic Koma Korrector 4-element

Software

Luc Coiffier DeepSkyStacker (DSS) · PHD2 Guiding · PhotoShop CS5 · FitsWork 4 · CCDCiel

Guiding Telescopes Or Lenses

TS-Optics 6" f/4 UNC Newtonian Telescope - Carbon

Guiding Cameras

Astrolumina Alccd5L-IIc

Acquisition details

Dates:

Nov. 5, 2020 · Nov. 6, 2020

Frames:

Baader Ha 1.25" 7nm: 96x300" (8h) (gain: 200.00) -20°C bin 1x1

Baader Planetarium O3 1.25" 8.5nm: 45x300" (3h 45') (gain: 200.00) -20°C

Baader Planetarium SII 1.25" 8nm: 58x300" (4h 50') (gain: 200.00) -20°C bin 1x1

Integration:

16h 35'

Last night was the first clear Moonless night for a while, so I drove an hour Southwest of Brisbane and took some test shots of some of the larger deep sky objects to see how my 100mm macro lens performs for astrophotography.

The Pleiades (also known as the Seven Sisters) is a galactic star cluster approximately 135 light years from Earth. It contains many young, hot blue stars, and the light from these stars can be seen reflecting off dust in the region.

This image is 30 x 30 second exposures in a Star Adventurer Mini tracker, with the lens at f/4 and 3200 iso. Processed using DeepSkyStacker and Lightroom 5.

M-27 Dumbbell Nebula

C-11 @ F/2 Hyperstar CGEM-DX on Pier

16 subs 60 sec iso1600 unguided

0 flats, 0 darks, 0 bias

Total integration 0 hours 16 minutes.

Canon 6D Baader Mod – by Hap Griffin.

Filter - LPS2

seeing - average

many times on target.

Stacked in Deepskystacker

Manually, off-axis guided for 11 x 5-minute exposures at ISO 1600, f/4.

Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; initial curves adjusted in Canon Photo Professional; final curves & colour-balance adjusted using Paint Shop Pro; final noise reduction using CyberLink PhotoDirector.

Secondo ritratto della Galassia di Andromeda con le altre due galassie ellittiche vicine, M32 e M110.

Rispetto alla prima foto ho cercato più pulizia e fedeltà cromatica.

Scattata in condizioni abbastanza favorevoli come inquinamento luminoso, ma con la galassia sempre abbastanza lontana dallo zenit, prima della nuova Luna piena riproverò.

Critiche, commenti e consigli graditissimi.

Nei commenti ulteriori dettagli.

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Data e luogo:

-Massa, 44° 2'31.08"N 10° 7'9.22"E

-27 Settembre 2011 ore 23 circa.

Number 35 in the Messier catalogue, number 2168 in the New General Catalogue.

A quite beautiful open star cluster in the constellation of gemini. At 2,700 light years away it is filled with young hot blue stars, leading to estimates at the age of the cluster to be around 150 million years. Over 500 massive stars spread out amongst 2,500 stars, stretching over just 24 light years.

In stark contrast is the open star cluster NGC 2158 in the lower right corner. Much further away at over 14,000 light years, it appears much more condensed. The lack of any large hot blue stars gives away the fact that it is also much older at an estimated 2 billion years.

Boring techie bit:

Skywatcher Quattro 8" Newtonian Reflector steel tube with the f4 aplanatic coma corrector, Skywatcher EQ6 R pro mount, Altair Starwave 50mm guide scope, ZWO asi120mm guide camera mini, ZWO asi533mc pro cooled to -10c, ZWO asiair plus.

300 seconds at 0 gain.

Stacked with DeepSkyStacker and processed in StarTools.

This is the Eastern part of the Veil Nebula complex in Cygnus. It's the remnant of a supernova that exploded 5-8000 years ago. The gas ejected from the explosion is still expanding outwards, colliding with other interstellar material at up to 30,000 km/s (one tenth the speed of light) -- the shock of the impact ionizes the gases, causing them to glow like this.

I've created a "bi-colour" image here -- a combination of just two channels -- with one channel in hydrogen-alpha (Ha) and one in Oxygen-III (OIII).

The image includes roughly 2.5 hours of exposure in Ha and 4 hours in OIII, through the QHY9 mono camera and William Optics FLT110 at f5.6. Stacked in DeepSkyStacker and aligned/processed in Photoshop.

Ha is mapped to Red, the Green channel is a 75-25 blend of OIII-Ha, and the Blue channel is a 90-10 blend of OIII-Ha.

Shot over two nights from my back yard in downtown Toronto, Canada.

This is the galaxy designated NGC 5961 located in the constellation Corona Borealis. Inside the galaxy is the supernova 2025ngs that I imaged on July 4, 2025. My magnitude estimate based on 60 minutes of collected data is V16.1.

Tech Specs: Meade 12” LX-90 SCT Telescope, Antares Focal Reducer, ZWO ASI2600MC camera running at 0F, 60 x 60 seconds, Celestron CGX-L pier mounted, ZWO EAF and ASIAir Pro, processed in Tycho Tracker and PixInsight. Image Date: July 4, 2025. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

A re-process of some of my data using DeepSkyStacker, Graxpert & PixInsight.

This planetary nebula is located right on the border of Taurus and Perseus. It is cataloged as NGC 1514 and is also known as the Crystal Ball Nebula. The magnitude, depending on the source, is listed at 10.9.

Observation data: J2000 epoch

Right ascension: 04h 09m 16.98573s

Declination: +30° 46′ 33.4699″

Distance: 1520 ly

Apparent magnitude (V): 9.27

Apparent dimensions (V): 2.2′

Constellation: Taurus

Tech Specs: Orion 8” RC Telescope, ZWO ASI2600MC camera running at -10F, 68 x 60 seconds, Celestron CGEM-DX pier mounted, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: January 2, 2024. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

Finally got imaging working again with my new laptop. It's taken a while!

M106 in Canes Venatici plus a few other galaxies, From top to bottom they are NGC 4220, NGC 4248, NGC 4217 and NGC 4346.

This was a quick test image stacked in DeepSkyStacker so there's a couple of satellite trails that could be processed out.

Taken from the Starshed Enterprise on 26th March 2020.

A stack of 9x300s exposures using a QHY22 camera on a TS Imaging Star71 - 71mm f/4.9 Imaging APO telescope. Autoguided using OAG. Flats, darks and bias applied.

Calibration and stacking done in DeepSkyStacker and post-processing in PixInsight.

Ambas feitas com 8 lights + 8 darks e 8 bias, empilhados no Deep Sky Stacker. Utilizei a t3i e a 24mm, com ISO 1600, f/ 2.8 e exp de 15 e 20seg.

August 21st, 2017

Mid-eclipse from Hopkinsville, KY approximately 3 miles away fro position of maximum eclipse. Total duration was 2 minutes, 41 seconds. The star Regulus can be seen on the left side of the eclipse.

Capture:

Canon 55-250mm variable lens

(F/22): Canon 550D

Exposures: 8x0.5"

ISO 100

Stacking: DeepSkyStacker

Processing: Photoshop for curves, color alteration, noise reduction.

_________________________________________

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OTA: Celestron C8N, 8" newtonian reflector

Starizona Nexus 0.75x coma corrector (for f/3.75)

Camera: ZWO ASI1600MM

Filters: Baader CMOS-Optimized Ultra-Narrowband

Exposure: Ha 12x10min, Oiii 7x10min, Sii 7x10min

Mount: CEM70G

Captured with SGP

Registered and stacked with DeepSkyStacker

Photographed from Round Rock TX (light pollution zone: red)

Skywatcher 100 Esprit APO refractor + Canon 6D full spectrum mod with Optolong-L filter. Exposure time: 6hr30min (99x240sec) august 18-19 2015 ISO1600. Stacked in Deepskystacker with 21 flat frames and 65 bias frames. Processed with Pixinsight. Mount: Skywatcher AZ-EQ5-GT. Capture software: Backyard EOS. Guided with PHD2 and Orion Starshoot autoguider on 50 mm guidescope.

Press L (followed by F11) for the best view.

Northfield, OH

DeepSkyStacker, ImagesPlus, rnc-color-stretch

30 exposures @1.6 sec ISO 3200

Pentax K5-II

Super Takumar 200mm F4

iOptron SkyGuider Pro

f/5.6@ISO 800

67x210s stacked using DeepSkyStacker

Processed in PixInsight and Photoshop

One of the last chances this season. Rosette was very low on the horizon.

About 80, 30 second images

D800

70-200 @ 200mm

iso 3200

F2.8

Eq3 unguided

UHC-e filter

Bortle 5

Taken using Skywatcher 80ED Pro (.85XFR), Nikon D3300, 137x30" lights (ISO 1600), 100 flats, 110 bias. Stacked in DeepSkyStacker and processed in Photoshop

Summer MilkyWay and its treasures

A project I was working on the past couple of days...4 nebulas depicting their locations within the MilkyWay.The MilkyWay and the Lagoon Nebula were both captured in Judique,Nova Scotia and the Eagle,Swan and Trifid nebulas were caught in my observatory in rural Ottawa,On.

---MilkyWay... ISO 800

18mm-f3.5 @ 360sec

---Swan Nebula...ISO 800:

42 x 30sec

ISO 1600:

22 x 60sec

12 x 300sec

14 x 600sec

12 x 900sec..22 Flats

---Eagle Nebula...ISO 1600

16 x 90sec

10 x 180sec

2 x 300sec

11 x 600sec

16 x 900sec

1 x 1200sec..22 x Flats

---Lagoon Nebula...ISO 1250

11 x 150sec

1 x 300sec..22 x Flats

---Trifid Nebula...ISO 1600

26 x 30sec

7 x 900sec

4 x 1200sec..20 Flats

-Celestron AVX Mount

-150mm SkyWatcher Reflector

-Orion autoguider package

-Nikon D5100 (unmodified)

-AC adapter

-- Capture --

PHD 2.4.1

BackyardNIKON

--Processing --

DeepSkyStacker

PhotoshopElements12

Photoshop CS2

Annie's Astro Actions

Galassia spirale NGC 891

AUTORE: Aldo Rocco Vitale (Gruppo Astrofili Catanesi “Guido Ruggieri”)

DATA: 14-15 settembre 2017

ORA: 22:30 – 00:30

LOCALITA’: S. Agata Li Battiati – 250 m.s.l.m.

TEMPERATURA: 25°

UMIDITA’: 60%

SEEING: 2

TRASPARENZA: 2

COSTELLAZIONE: Andromeda

OGGETTO: NGC 891

TIPO: Galassia spirale

COORDINATE: A.R.: 02h 22m 33s ; DEC.: +42° 20′ 57″

MAGNITUDINE VISUALE: 10

DIMENSIONI ANGOLARI: 13,5’ x 2,5’

DISTANZA: 39 milioni a.l.

OBIETTIVO: Celestron C11; D=280 mm; F=1764 mm; f/6.3

CAMERA DI RIPRESA: Canon 1200D

OBIETTIVO GUIDA: Celestron C90; Celestron C90; D= 90 mm; F=1250 mm; f/13.9

CAMERA DI GUIDA: Skywatcher Synguider II

ISO: 1600

TEMPO DI POSA: 48 x 240” ( tot 3h e 12m )

LIGHT: 48

FLAT: 35

DARK: 0

BIAS: 0

SOFTWARE DI ELABORAZIONE: DeepSkyStacker + Astroart + Pixinsight + Photoshop + Lightroom

Canon 5dmkii f/2 C-11 /CGEM-DX / Hyperstar. 25 lights, no Darks, no Bias, no Flats, stacked in Deepskystacker.

The Pleiades or Seven Sisters (Messier 45 or M45), is an open star cluster containing middle-aged hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. The celestial entity has several meanings in different cultures and traditions.

The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades was probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

en.wikipedia.org/wiki/Pleiades

An open star cluster also called the Foxhead cluster, though like most of these names, I don't see it. Quite a number of red giant stars hide in this cluster.

NGC 6819 lies 7,200 light years from us in the constellation of Cygnus the Swan.

Boring techie bit:

Skywatcher Quattro 8" Newtonian Reflector steel tube with the f4 aplanatic coma corrector, Skywatcher EQ6 R pro mount, Altair Starwave 50mm guide scope, ZWO asi120mm guide camera mini, ZWO asi533mc pro cooled to -20c gain 101, Optolong L'enhance 2" filter, ZWO filter drawer, ZWO asiair plus.

60s exposures.

Best 80% of 120 light frames.

Darks, Flats & Bias.

Stacked with DeepSkyStacker and processed in StarTools & Affinity Photo.

Target:SH2-132 Lion nebula, a very faint emission nebula in the constellation of Cepheus at about 11000 light years from Earth.

Location:30/12/2020 and 01/01/2021 from St Helens UK, Bortle 8. Over 90% Moon.

Aquisition:38x 180s Ha, 36x 180s (OIII), 19x 180s (SII). Total integration 279 min.

Equipment:Imaging: Skywatcher Esprit 100ED, HEQ5 Pro, ZWO ASI1600MM Pro with EFWmini and Baader planetarium narrowband filters.

Guiding: Skywatcher 9x50 finder with ZWO ASI120MM.

Software:Capture: NINA, PHD2

Processing: DeepSkyStacker, Siril, Photoshop, Starnet++.

Memories:Fog descended on first evening so target resumed a couple of days later on a clearer night.

Nikon d5100

22mm

f3.8

ISO 1600

20 second exposures

20 images stacked

I applied a heavy noise reduction filter to this to try and get that smooth Hubble look :)

M65, M66 and NGC 3628; 30 million light years from home.

I was going to crop this tighter around the galaxies, but then I noticed a telltale streak on the left side of the image. After consulting Cartes du Ciel I discovered it was asteroid 128 Nemesis, which - despite its ominous name - doesn't come anywhere near the earth. (It's currently at a very safe distance of 2 Astronomical Units.)

Total exposure time: 85 mins

Telescope: Tele Vue-60 APO refractor

Mount: Vixen Super Polaris

First clear night in ages, but at least we haven't had as much rain as in the north of the country.

8 x 7-minute exposures at ISO 1600, f/6.25. Modified EOS 600D & Sky-Watcher ED80 refractor, piggybacked on a Celestron C8 telescope for manual guiding.

Registered and stacked using DeepSkyStacker; initial curves adjusted in Canon Photo Professional; final curves and colour balance adjusted using Paint Shop Pro; noise reduction via CyberLink PhotoDirector.

Here's a crop of a photo of Comet Lulin shot with the Nikkor 200mm f/4 AI telephoto lens. I had the IDAS light pollution filter on the lens to help bring down the sky fog. There's still a bit of vignetting even though it's cropped. You can clearly see the dust tail (anti-tail) to the left of the comet. The proper tail is not that distinguished as it is projecting away from us. The bloated stars and Saturn were caused by me not using a smaller aperture.

Mars und Pleiades

Canon 80D / 70-200

2 sec / f 2.8 / Iso5000 / 200mm

DeepSkyStacker

Stack 20 Lightframes / 15 darks

Milky Way from Lake St. John Airport

Larger

Equipment

Imaging Telescopes Or Lenses

TS-Optics 6" f/4 UNC Newtonian Telescope - Carbon

Imaging Cameras

ZWO ASI 183 MM PRO

Mounts

Sky-Watcher NEQ6-Pro

Filters

Baader B 1.25'' CCD Filter · Baader Ha 1.25" 7nm · Baader G 1.25'' CCD Filter · Baader R 1.25'' CCD Filter · Baader Planetarium O3 1.25" 8.5nm · Baader L 1.25'' Filter

Accessories

ZWO EAF Electronic Auto Focuser · TSOptics TS Off Axis Guider - 9mm · Pal Gyulai GPU Aplanatic Koma Korrector 4-element

Software

Luc Coiffier DeepSkyStacker (DSS) · PHD2 Guiding · PhotoShop CS5 · FitsWork 4 · CCDCiel

Guiding Telescopes Or Lenses

TS-Optics 6" f/4 UNC Newtonian Telescope - Carbon

Guiding Cameras

Astrolumina Alccd5L-IIc

Acquisition details

Dates:

Aug. 6, 2020 · Aug. 7, 2020 · Aug. 8, 2020 · Aug. 20, 2020

Frames:

Baader B 1.25'' CCD Filter: 11x240" (44') (gain: 53.00) -20°C bin 1x1

Baader G 1.25'' CCD Filter: 12x240" (48') (gain: 53.00) -20°C

Baader Ha 1.25" 7nm: 75x300" (6h 15') (gain: 200.00) -20°C bin 1x1

Baader L 1.25'' Filter: 24x240" (1h 36') (gain: 53.00) -20°C

Baader Planetarium O3 1.25" 8.5nm: 39x300" (3h 15') (gain: 200.00) -20°C bin 1x1

Baader R 1.25'' CCD Filter: 12x240" (48') (gain: 53.00) -20°C bin 1x1

Integration:

13h 26'

The open star cluster M39 in the constellation Cygnus. An unguided image taken last night over Monticello, NY through a Canon 400mm f/5.6 L lens using a Canon 7D MKII dslr camera on a Celestron AVX mount. Thirty 30 second images, eight dark frames, and fifteen bias frames were stacked using DeepSkyStacker, then enhanced with Adobe Lightroom and Photoshop Elements.

Comet Lovejoy looking spectacular for Xmas now with a nice bright tail.

I was surprised to see the small horizontal fuzzy blur under the comet a distant Dwarf Galaxy NGC2188 32.5 Million Light Years away and very dim at Magnitude 12. Making it the dimmest most distant object I have ever photographed!

Olympus OMD-EM1 Camera with Zuiko Digital 150mm 2.0 Telephoto Lens tracked on Ioptron Skytracker. 10X1 minute exposures @ iso 1600 stacked in Deepskystacker

Photographing the Milky Way is my Muse. I keep going back to it seeing if I can approach it from another perspective. It's intensely beautiful. If you've never seen it, then you owe yourself an opportunity to go away from the city or town and out to a rural area. Even a 20 minute drive outside of the city limits will take you to a dark enough sky to see the general shape of the bright Cygnus region. This was taken the morning of August 12 during the recent Perseid meteor shower.

A view of the Andromeda Galaxy in the constellation of the same name captured in a stack of ninety-one images that were exposed for 10 seconds each using a hand-driven, barn-door type tracking mount (two boards, a hinge, and a screw you turn by hand). This photo also shows Andromeda's two satellite galaxies, M32 and M110 (see image notes for the locations, M110 is the small elliptical galaxy slightly below center).

This image is best viewed in the Flickr light box (press the "L" key to toggle the light box). You can also view on black or at full size by using the following links:

View On Black

View At Largest Size

Captured on December 14, 2011 between the hours of 7:35 PM and 8:07PM PST with a Nikon D5100 DSLR (ISO 2000, 10 second exposure x 91) and a 105mm AI-S 1:2.5 Nikkor lens set to aperture f/4. Image stack created with DeepSkyStacker using 91 image frames combined with 63 dark frames (no flats or bias). Final image adjustments done in Photoshop CS3 with star diffraction spikes enhanced using ProDigital Software's Astronomy Tools.

All rights reserved.

M81 (Bodes Galaxy, NGC 3031) + M82 (Cigar Galaxy, Starburst Galaxy, NGC3034).

Lots of high clouds and bad seeing, more data were better.

Pentax K3ii, Pentax HD Rear Converter 1.4x AW

TS APO Triplet 80/480 mm

31 x 300 s @ ISO 400

Combination of a stack with DeepSkyStacker and a Sequator stack.

I caught a news story a few days ago about a supernova in galaxy NGC 3184 and decided to try and image it on March 29, 2016. Problem was the high winds here in Pennsylvania. The magnitude was listed in the 15 range, but decided to try imaging it using my Canon EF 400mm f/5.6L USM lens.

The wide field image (see my other Flickr post or my blog) is a clip from a full frame, stacked 14-minute total exposure using a Canon 6D and Canon EF 400mm f/5.6L USM lens mounted on an iOptron ZEQ25 mount. 14 x 60 seconds at ISO 3200, stacked in DeepSkyStacker and further processed in Adobe Lightroom and ImagesPlus.

I then clipped the galaxy from the full frame view and processed it in Lightroom. I found a great pre-supernova (baseline) image by Adam Block (who gave me permission to use his image for comparison purposes – thank you Adam). Adam’s image can be found at www.caelumobservatory.com/obs/n3184.html

I hope to do additional imaging as time permits.

BLOG: www.leisurelyscientist.com

Skyobjekt: Messier-42 ( Orionnebula & NGC1977)

.

Equipment

Nikon D5300

Sigma 150-600mm

IBresser Messier EXOS-2 EQ GoTo

.

Lense 600 mm

ISO 2000

f/ 6.3

Lights 60x 60 sec

Darks 20

Bias 30

.

Edit

DeepSkyStacker

PixInsight

Photoshop CC

Lightroom CC

Nebulosasa Norteamérica y Pelicano en el Cisne

iso440.com

10 300s ISO 1600 exposures fully calibrated.

Brent Oliver modified Canon T3

Astronomik 12nm H-alpha filter

Canon f/1.4 50mm @ f/4.0

Guided on CG-5 by an AT65EDQ with a StarShoot Autoguider.

BackyardEOS DeepSkyStacker

Fecha: 06-02-2022, de 03h55m a 05h43m U.T.

Lugar: Las Inviernas, Guadalajara

Temperatura ambiente: de -03.0ºC a -05.5ºC

Cámara: ZWO ASI071MC Pro

Óptica:

Telescopio Newtoniano TS, 200mm de diámetro f/4.

Corrector de coma Baader MPCC Mark III.

Filtro: Omegon Light Pollution Filter.

Montura: Skywatcher EQ6 Pro Synscan v.3.25

Guiado: Automático con QHY-5 mono y PHD Guiding v.1.14.0, utilizando un telescopio refractor Orion 80mm de diámetro a f/5.

Exposiciones:

21 imágenes de 300s cada una, a -05ºC y 100 de ganancia

en total, 1h45min.

30 darks de 300s, a -05ºC y 100 de ganancia

30 flats de 2s, a -05ºC y 300 de ganancia

30 bias de 0.001s, a -05ºC y 100 de ganancia

Software: DeepSkyStacker v.4.2.0

PixInsight LE 1.0

Adobe Photoshop CC 2019

Astronomy Tools v.1.6

I've change the developing software. Deepskystacker is great!

This extent contains eleven Messier objects (M 58, 84, 86-91, 98-100) and many other galaxies. Markarian's Chain is the string of galaxies in the center. My favorite is the Coma Pinwheel Galaxy (M 99) in the center of the upper right quadrant, with its interesting coma shape.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 102 x 30 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken on Feb. 27, 2020 under Bortle 3/4 skies.

A galaxy in the constellation of Draco.

A barred spiral galaxy that is quite a difficult target because of it's low surface brightness.

11.7 million light years away this galaxy was first spotted by William Herschel in April of 1793.

Boring techie bit:

Skywatcher Quattro 8" Newtonian Reflector steel tube with the f4 aplanatic coma corrector, Skywatcher EQ6 R pro mount, Altair Starwave 50mm guide scope, ZWO asi120mm guide camera mini, ZWO asi533mc pro cooled to -10c, Optolong L'enhance 2" filter, ZWO asiair plus.

300 seconds at 0 gain.

Stacked with DeepSkyStacker and processed in StarTools & Affinity Photo.