More deep sky stacking fun. I went out again tonight, and filled up the CF card in the camera with 2 second exposures. the moon wasn't quite up yet, so I think the background sky was a little darker. However, the resulting exposure didn't look significantly better than the one from yesterday.

So I decided to combine all the exposures from yesterday and today to see how that looked.

This works out at a combined exposure of about 12 minutes.

Bubble nebula "true color" narrowband: 21X1200"Ha, 12X1200"Oiii, 12X1200"Sii SVR90T OTA, Atik 428ex, AP900, DeepSkyStacker, Photoshop levels, curves, blending, guided with Orion SSAG and Orion ShortTube guidescope.

Riccardo Rossi / ISAA

23:15 CEST - 18 Lug 2020 - Lama Mocogno (MO)

NIKON D90 + Nikkor 14-24mm f/2.8G ED AF-S

Focale 24mm - Apertura f/2.8 - Posa 30” a 800 ISO

Treppiede motorizzato EQ3

Stacking di 14 scatti con DeepSkyStacker

Telescope: SkyWatcher Black Diamond ED80 + Reducer 0.85x

OTA: SkyWatcher Ηeq5 Pro

Guiding: SkyWatcher 9x50 Finder με ZWO ASI120 MM

CCD: ATIK 414ex

Filter: Baader L

Proccess: DeepSkyStacker 3.3.4, Adobe Photoshop CS6

L : 125x56

Darks : 10

bias : 45

Flats : 45

Dark Flats : 45

Not a bad view, eh? Sitting and looking at the ocean is always a restful, soothing experience for me. Sitting and lThis image of Orion and its surrounds was created using the iOptron SkyTracker and my unmodded Canon EOS 6D plus Canon 40mm STM lens. The photo shows lots of stars and some significant deep-sky features. I expected to be able to photograph M42 (Orion Nebula) and got it but it’s overexposed here. The one feature of this part of the sky that I was wanting to capture was Barnard’s Loop and I’m happy that I achieved that goal. As well as these two wonders I snagged the Witch Head Nebula (very faint), the Running Man Nebula, IC434 & the Horsehead Nebula, plus the Flame Nebula. The Rosette and Lambda Orionis Nebulae, the much smaller and fainter vDB 38 Nebula and the Christmas Tree Cluster are also visible.

I’ve had the tracking mount for about three years but haven’t used it more than a handful of times. Initially I struggled with achieving polar alignment and after my first few attempts the tracker ended up languishing in a cupboard for around eighteen months. Whether it’s the “proper” way or not I’ve found that using some electronic spirit levels and my iPhone’s Compass app I can achieve polar alignment much more reliably than any method I’ve tried previously.

The source images for this composite were as follows:

Lights:x49 framesCanon EOS 6D, Canon 40mm STM f/2.8 lens @ f/3.2, 60 second exp @ ISO 1600

Darks:x5 framesCanon EOS 6D, Canon 40mm STM f/2.8 lens @ f/3.2, 60 second exp @ ISO 1600

Bias:x15 framesCanon EOS 6D, Canon 40mm STM f/2.8 lens @ f/3.2, 1/4000 second exp @ ISO 1600

Stacking was done using Deep Sky Stacker running in the Wineskin wrapper on an iMac. I used the “MiniSTARS” Photoshop action for star reduction photographingspace.com/product/ministars/?utm_source=ps&a... at a starry sky fills me with awe and wonder. This seat on Tarandore Point at Tuross Head, Australia, provides the best of both of these experiences. Access is free and more often than not you’ll be the only person there to take it all in.

The photo was taken with a Canon EOS 6D, a Rokinon 24mm lens @ f/2.4, 13-second exposure @ ISO 6400.

Finally I managed to capture a decent image of M31 and its two satellite galaxies. I really need to try it with 2 minute exposures one day.

Exposure: 47x60s, ISO 800

Camera: Olympus E-PL1

Lens: Konica Hexar 200mm f/4 with external aperture mask

Mount: EQ3-2

Software: DeepSkyStacker, Darktable, Krita

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

Image taken with a Nikon D750 and Zenithstar 61 scope, mounted to the iOptron SkyGuider Pro.

Stacked in DeepSkyStacker, then processed in Photoshop.

57x240sec ISO1600 Skywatcher Esprit 100mm F5.5 Apo triplet with full spectrum modified Canon 6D and Astronomik L (IR/UV cut off) filter. 20Dark frames,20Flat frames,65Bias frames. Stacked in DeepSkyStacker and processed in Pixinsight. Date: 09-aug-2015. Not an easy target.......

C9.25 @ f/10 and SX Trius 694 attached to filter wheel and OAG all riding on an EQ6 Pro. Five subs at 900 seconds each through an H alpha filter during the time of full Moon, stacked in Deepskystacker and processed in PS CS2,darks and flats subtracted.

Taken 26/02/2021

Last of the photos from my Christmas/New Year astronomy sessions.

Manually, off-axis guided for 9 x 4-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; noise reduction via CyberLink PhotoDirector.

Taken using Skywatcher 80ED Pro (.85X FR), Nikon D3300, 102x30" lights (ISO 3200), 100 flats, 110 bias. Stacked in DeepSkyStacker and processed in Photoshop

The Eagle Nebula (catalogued as Messier 16 or M16, and as NGC 6611) is a young open cluster of stars in the constellation Serpens. Its name derives from its shape that is thought to resemble an eagle. It contains several active star-forming gas and dust regions, including the famous "Pillars of Creation", photographed by the Hubble Space Telescope.

Optical Rig

MOUNT: Meade LX850 w/ Starlok

SCOPE: Stellarvue SV105-3SV

REDUCER: SFF7-3SV Field Flattener

CAMERA: Canon 550D Full Spectrum Mod by Gary Honis

FILTER: Astronomik L-UV/IR Filter

SOFTWARE: Nebulosity 3

Exposures

19 1-min 1600 ISO @ f3.5 (19min)

11 2-min 1600 ISO @ f3.5 (22min)

5 5-min 800 ISO @ f3.5 (25min)

5 5-min 1600 ISO @ f3.5 (25min)

Total Exposure Time 91 minutes

Image Processing

STACKER: Deep Sky Stacker

RAW EDIT: Adobe Lightroom

Operating System - Windows 8.1 64bit

Shot on the Natchez Trace Parkway at the Meriwether Lewis Monument.

Camera: EM1 Mark II

Lens/Telescope: Prime Focus with Stellarvue 80mm f6 Achromatic Refractor (Nighthawk Classic)

Subs: 10 x 60s, ISO 6400

Darks: 10

Flats: 30

Dark Flats: 30

Bias: 30

Mount: Celestron ASGT EQ (unguided)

Location: Bortle Scale 5

Software: DeepSkySTacker, Lightroom, Photoshop

We had a cloudless night last night, but the transparency was appalling (could only see The Pleiades with averted vision!). But as it was the first clear night in a month, I decided to have a go. Seven frames in and the fog descended with a vengeance, so this is just 7 x 4 minutes. Very pleased with this considering the conditions and small number of subs, and gives me hope for a much better image when the conditions improve. Hopefully then I'll pick up some of the fainter stuff :)

Nikon D70 modded, 55-200 Nikkor at 200mm (full frame), f5.6, 1600iso, Baader Neodymium filter.

7 x 4 min subs for a total of 28 mins, unguided EQ5

Darks, flats and bias

Stacked and processed in DSS and CS5.

This photo was taken from Silchester, Hampshire, UK (51.35 long, 1.06667 lat).on 24 September 2013 between 9.30pm and 10.00pm.

The photo is composed of 20 exposures of 90 seconds at ISO 6400 with four dark frames subtracted and all stacked using deepskystacker.

The California Nebula is an emission nebula located in the constellation Perseus. It is almost 2.5° long in the sky and, because of its very low surface brightness, it is extremely difficult to capture. As a result, I'm quite pleased with this imagine.

My equipment is a modified Canon EOS 1100D, a Sky Watcher ED80 telescope and an EQ3-2 Mount with an RA motor. I also used a UHC filter to help remove some of the light pollution.

orion widefield. taken from the LP capital of the world: oakland, CA.

canon 50d (unmodified) and canon 50mm f/1.2L lens, mounted on an orion sky view pro. astronomik CLS clip-in fliter. polar alignment using orion spotting scope. unguided.

night 1: 1m45s x 62f at ISO640 and f/3.2. 1h48m total.

night 2: 1m45s x 58f at ISO800 and f/5. 1h38m total.

night 1 and night 2 individually stacked in deepskystacker using auto-adaptive weighted average. 20 bias frames and 20 darks each.

then, night 1 final image and night 2 final image stacked together using average mode, for a total of 3h26min.

postprocessing in pixinsight 1.5:

- automatic background extraction to take care of a wicked sky gradient.

- deconvolution

- noise reduction

- 6 separate histogram stretches

then, image fusion of the 6 stretches using enfuse. this step is needed because M42 is so bright that it is completely blown out when the image is stretched enough to bring out barnard's loop.

final tweaks in lightroom 2.0; a little bit of color balancing and contrast adjustments.

lastly another run at noise reduction in noise ninja. if i knew how to use pixinsight better this would probably not be necessary.

notes:

this is kind of weak sauce and likely what you could get in just a few minutes of imaging from a dark site. also i should probably get a camera with the IR cut filter removed...

on night 1 i was anxious to get going since orion only clears the roof of my house about 11:30pm these days. i meant to shoot more to the left to pick up all of barnard's loop, but it was still obscured by my house.

it turns out that either i have a bad copy of this lens, or its just not well suited for astrophotography. even stopped down from its native f/1.2 to f/3.2, there is still a LOT of red CA. i may have been slightly misfocused as well. luckily it's just a rental, as it is a very expensive lens.

so on night 2 i stopped down to f/5, but cranked the ISO. the CA was reduced, but it's still there. i probably should have gone for longer exposures too. the only problem is that there's so much skyglow that i could probably only do 3 minutes tops even at f/5 without overexposing the bottom of the image.

having said all of that i'm sort of amazed to see the slightest bit of witch head goin' on over there.

i'll probably continue to work on this widefield over the coming months.

Orion's Belt and Sword, M42 Orion Nebula (right) and IC434 Horsehead and NGC2024 Flame Nebulae (left) - widefield (approx 8.5deg across) - 15-Dec-2014 Zeiss Sonnar Apo 135/2 lens on Astrotrac TT320X-AG mount - Canon 60Da camera + Hutech IDAS LPR Filter, 33 frames (240sec) + 22 frames (30sec) 135mm @ f/2.0 ISO400 - Total Exp: 2h23m + 20+27 Darks + 29 EL panel flats, stacked with DeepSkyStacker, post-processed with Photoshop CC/Lightroom/Nebulosity 3

4x20s ISO800

1 Flat Dark - 1 Master Dark

Fuji FinePix S1 Pro

Nikkor 28-80mm F3.3-5.6G at 28mm F3.3

Deep Sky Stacker

(Scusate la compressione degradante del JPEG ma però non riuscivo a caricare il RAW)

Imaging telescopes or lenses: Skywatcher Explorer 130 PDS

Imaging cameras: Canon 600 astro-modificated

Mounts: Celestron Advanced VX Goto

Software: Photoshop, DeepSkyStacker, Fitswork

Filters: Astronomik Clip-Filter (EOS) / CLS

Resolution: 2268x1511

Dates: April 19, 2015

Frames: Astronomik Clip-Filter (EOS) / CLS: 110x50" ISO800

Integration: 1.5 hours

Flats: ~25

Avg. Moon age: 0.24 days

Avg. Moon phase: 0.07%

Bortle Dark-Sky Scale: 7.00

Localisation : CastresmallObservatory (Castres, Tarn - France)

Acquisition Date : 2017-01-06

Auteur/Author : ROUGÉ Pierre

Mouture/mount : Orion Atlas EQ-G

Tube/Scope : Newton Orion 200/1000 (f/5) + MPCC Baader

Autoguiding : Skywatcher Synguider (v1.1) & Meade ETX 70/350 mm

Camera : Canon EOS 400D (Digital Rebel Xti) refiltré Astrodon in Side (modded Astrodon in Side)

+ EOS CLIP CLS Astronomik

Exposure : 40 minutes [40 subexposures of 60 sec each (selected from 40)] @ ISO 1600

Calibration : Dark & Bias : 10/11 @ ISO 1600 - Flat & Dark-Flat : 9 @ ISO 400

Temps/Weather : Bonne transparence. Faible vent nul. T= -3°C. Humidité faible.Lune/moon 57 %.

Constellation : Aurigae / Cocher

Software Used : Astro Photograph Tool (v3.13), DeepSkyStacker 3.3.6, Pixinsight LE, PhotoShop 7, xnview, Noiseware Community Edition

NGC7635 Bubble Nebula (left) and M52 cluster (right) - 19/10/11 - 8" reflector on HEQ5 mount - Nikon D90 + Coma Corrector + LPR Filter, prime focal, guided with SPC880 webcam FinderGuider and PHD, 39 frames (300sec @ISO1600) + 11 frames (600sec @ ISO800) Total Exp:5h05m + 29 EL panel flats, stacked with DeepSkyStacker

NGC4631 Humpback Whale Galaxy

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

OverallQuality = 999.81 in Deepskystacker

41 subs 60 sec iso1600 unguided

5 flats

5 darks

5 bias

Total integration 41 minutes.

Canon 450D Full spectrum - self Mod

Filter - LPS2

seeing - better than normal

2nd time on target

Added 45min Ha subs (3x900 bin 1x1) to previous DSLR image.

Takahashi FSQ106ED f/5, QSI683ws CCD, 6nm Astronomik Ha filter, Canon 1100d DSLR (mod), Celestron Advanced Vx Mount, Orion 10x50 Guidescope, MS Lifecam Cinema guide camera.

Sequence Generator Pro, PHD, DeepSkyStacker, Photoshop CS6, Noiseware plug-in, StarSpikesPro 3

William Optics Zenithstar 73

ZwoASI2600MC Pro

Optolong L-Pro broadband filter

PHD2 guided

SharpCap

DeepSkyStacker

Adobe Photoshop CC 2021

29-150 second subs

Image taken with a Nikon D750 and Zenithstar 61 scope, mounted to the iOptron SkyGuider Pro.

Stacked in DeepSkyStacker, then processed in Photoshop.

Fifty 0.5-s exposures, 125 mm, ISO 1000, combined in DeepSkyStacker. April 15, 2014

Widefield Heart and Soul Nebula (top left), Double Cluster NGC 869, 884 (bottom left), Caldwell 10 open cluster (bottom right), and more...

www.astrobin.com/199736/0/

Bower 85mm F4

Canon T4i ISO 800 3 mins

9x lights

6x darks

DeepSkyStacker

iOption SkyTracker

Pixinsight 1.8

A few shots that I took at Redmires early this morning have been stacked using DeepSkyStacker to produce this image of part of the Milky Way

Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away, with a diameter of 90,000 light years, about half the size of the Milky Way, in the constellation Ursa Major. Due to its proximity to Earth, large size, and active galactic nucleus (which harbors a supermassive black hole), Messier 81 has been studied extensively by professional astronomers. The galaxy's large size and relatively high brightness also makes it a popular target for amateur astronomers.

Messier 82 (also known as NGC 3034, Cigar Galaxy or M82) is a starburst galaxy approximately 12 million light-years away in the constellation Ursa Major. A member of the M81 Group, it is about five times more luminous than the whole Milky Way and has a center one hundred times more luminous than our galaxy's center. The starburst activity is thought to have been triggered by interaction with neighboring galaxy M81. As the closest starburst galaxy to Earth, M82 is the prototypical example of this galaxy type. SN 2014J, a type Ia supernova, was discovered in the galaxy on 21 January 2014. In 2014, in studying M82, scientists discovered the brightest pulsar yet known, designated M82 X-2.

Imaged on 2/22/20.

Nikon D5300 Ha modified.

240 second subs at iso 800

IDAS LPS-D1 filter

About 4 hours total integration.

Celestron Advanced VX

Explore Scientific ED102 APO

Orion Magnificent Mini Autoguider

Astrophotography Tool, PHD2, Deepskystacker, Startools

This target was the first guided target that I images in February 2019.

I re-imaged M81-M82 with a Ha modded dslr, IDAS LPS D1 filter.

Improvement in the nebulous structures in M81 and the hydrogen splash from the core of M82.

First Star - stack ever. Uses Hugin and Stellarium for Skyrotation and then stacked all the Images with Deep Sky Stacker. The Image is made of 20 Pictures + 5 Darkframes and Postprocessed in Lightroom.

For me at least, its a good first try in Stacking the Milkyway.

First image from the first night with the new AstroTrac. I only got 9 frames before it was time to go to bed (I don't think it's too bad for so few frames).

If you look closely, you can see the North America Nebula (NGC7000), the Veil Nebula, and a all sorts of other stuff.

9 x 4 min at ISO 800, f/4

Canon 350D (modified)

Canon EF 35mm f/1.4L

AstroTrac TT320(K)

Milky Way in the constellation Perseus

*

Teleskop / Kamera:

Montierung: Star Adventurer

Optik:60mm f/3.5

EF-S60mm f/2.8 Macro USM

Kamera: Canon EOS 650D

Guider: -

Filter:-

Aufnahmedaten:

Zahl der Aufnahmen: 9

Brennweite:60 mm

Öffnungsverhältnis: 3,5

Belichtungszeit pro Aufnahme: 30 sek.

Empfindlichkeit ISO-Wert: 1600

Darkframes -

Flats -

Bildbearbeitung:

DeepSkystacker:

Standard / Light = Durchschnitt / Ausrichtung= Automatsch / 100% der Bilder

Photoshop Elements 10:

Tonwertkorrekur, Sättigung

Canon 5D3 with Celestron's CGEM 1100HD. Taken in the Northwoods of Wisconsin with fair seeing and very dark skys. Used ISO 1600 and a stack of eight (using Deepskystacker). Each exposure was 10 minutes with a dark frame of the same time. Manual guiding was done using Celestron's Off-Axis Guider and Orion's 12.5mm illuminated reticle eyepiece. Hope to get more images in the future for greater stack number to reduce grain.

This emission nebula is about 11,000 light-years away and rather dim at Mag 10. Its size is about 15x8 arc-mins (long lenth is 1/2 size of moon). The bright star off-center of the bubble is causing all the action (bubble due to solar winds, red emission due to its radiation). This star is 15 times as massive as the sun.

The reds are H II emissions and these occur very close to the cameras' IR filter so are reduced by a factor of 6 or so (no, I am not going to remove the filter on the 5D3!). These IR filters are unfortunate for astrophotography since the best images are H II regions (but OTOH it stops us from seeing too much of people we photograph!). I think Canin is going to be making the 60A, "A" for astronomy, that has the filter removed.

NGC4631 (The Whale or Herring Galaxy)an edge-on spiral galaxy. Its companion in the field of view is NGC4656/57 (The Hockey-Stick or Crowbar Galaxy) which is a highly warped barred spiral galaxy. Both galaxies can be observed in the constellation Canes Venatici (Hunting Dogs).

The original images were taken on 27.02.17 with a Canon EOS 760D attached to an 11" Celestron Nexstar scope fitted with a Starizona Hyperstar f/2 lens.

Processing with DeepSkyStacker, Photoshp CS4, and NeatImage.

Compilation de 12 images (2 darks) de la galaxie d'Andromède, M31. Programmes: Deepskystacker et Photoshop CS4. D4+Nikkor 200-400 F/4+ TC-14E II+ Déclencheur souple MC-30+ Monture motorisée. Expositions entre 30 et 130s.Total de 1351 secondes.

Stack of 12 images (and 2 darks) of the galaxy Andromeda (M31). Softwares: Deepskystacker and Photoshop CS4

D4+Nikkor 200-400 F/4+ TC-14E II+ Remote trigger MC-30+ Motor mount. Exposures between 30 and 130s.Total of 1351 seconds.

Imaging telescopes: Skywatcher Esprit 100ED APO Triplet

Imaging cameras: ZWO 1600MM-COOL

Mounts: Sky Watcher NEQ6 pro

Guiding telescopes or lenses: Skywatcher Esprit 100ED APO Triplet

Guiding cameras: ZWO ASI 120 MC-s

Software: Photoshop CC Photoshop · Astrophotography Tool · DeepSkyStacker 4.1.1 64bit Deepskystacker

Filters: Chroma 5nm HA · Chroma Sii 3nm · Chroma OIII 3nm

Accessory: ZWO EFW 36 mm Filter Wheel

Frames:

Chroma 5nm HA: 38x300" (gain: 200.00) -15C bin 1x1

Chroma OIII 3nm: 38x300" (gain: 200.00) -15C bin 1x1

Chroma SII 3nm: 38x300" (gain: 200.00) -15C bin 1x1

Camera: Nikon D90

Lens: Tokina 11-16 F2.8 DX

Exp: 30 sec

ISO: 1600

Software: 25 light frames+dark+bias stacked in DeepSkyStacker

Finish edit in PS.

16x180 s , Canon EF 50/1.4 (f2.2/) iso 1600

DSS + CS6

Managed to drag myself out over the last couple of nights. We've had several clear skies on the trot, but I've been too knackered. Very clear last night, and I wasn't intending to stay up until stupid a.m., but felt I had no choice :)

This is just over 2 hours in 60 second chunks, and is an improvement on last years effort, albeit a tad blotchy in places. May give this another go when I get the time.

200p/EQ5 unguided

Nikon D70 modded, iso1600, Baader Neodymium Filter

126 x 60 seconds

Darks, flats and bias

Stacked and processed in DSS and CS5

Managed to get out last night and have another go at this. Conditions were much better and, to be honest, I expected more, although the extra data has enabled me to do a closer crop. I've put up several iterations of this, and this is probably as good as it's going to get. Reasonably happy now. :)

Nikon D70 modded, 55-200 Nikkor at 200mm (cropped), f5.6, 1600iso, Baader Neodymium filter.

26 x 4 min subs for a total of 1 hour 44 mins, unguided EQ5

Darks, flats and bias

Stacked and processed in DSS and CS5.

Shall I spike that fat star? ;)

A crude stack of 4x 30 second exposures of Comet Lovejoy.

View from Maple Ridge BC, Canada

F5.6, 110mm, Canon 60D. Orion Starblast Autotracker Mount. Stacked with Deepsky Stacker.

This image is a 5-hr guided exposure (60 x 5-min subs) of IC 63 (and part of IC 59), also known as the Ghost of Cassiopeia. The brightest star in the image is Gamma Cassiopeiae, which is 19 times more massive, 65,000 times brighter, and spins 200 times faster than our sun. The radiation from Gamma Cass is so intense that it affects the IC 63 gas/dust cloud several light years away.

The hydrogen within IC 63 is being bombarded with ultraviolet radiation from Gamma Cassiopeiae, causing its electrons to gain energy which they later release as hydrogen-alpha radiation -- visible in red in my image.

The dust in IC 63 also reflects the blue light from Gamma Cass. Hints of blue are just starting to show up in my data.

Rio Rancho NM Bortle 5 zone -- from my balcony

September 22 2021

William Optics Redcat 51

ZWO 183mc pro

ZWO 30mm f/4 mini guide scope and ZWO 120 Mini

Optolong L-eNhance filter

ZWO ASI Air Pro

Sky-Watcher Star Adventurer

60 X 300s lights (5 hr) ; with darks and bias

Gain 111 at -10C

Processed in DSS and PS

Try as I might I can't get this one right - washed out by moonlight, try again another night.

Canon 550D, 30 1 minute exposures, ISO 800

Sky-Watcher Quattro 8CF ( 800mm f/4 )

x3 Dithering in DeepSkyStacker.

Constellation: Scorpius

Taken at Blackheath NSW on 12/09/2009

Modified Canon EOS 400D, Orion ED80 (FL600mm) at prime focus.

EQ5 mount autoguided by 3"WO refractor;Philips webcam & PhD

ISO800 3 x 10min subs stacked in DeepSkyStacker with darks.

60 light - 800 iso - 120 sec.

11 dark - 800 iso - 120 sec.

31 offset - 800 iso - 1/8000 sec.

31 flat frame - 800 iso - 1/80 sec.

Reflex no modded on eq5 synscan without guide and telescope refractor TSED70Q 474mm 70mm F6.7.

Processed with DeepSkyStacker 3.3.2, Pixinsight, Photoshop CS6

Andromeda Galaxy

20 September 2023 from Singapore

Bortle class 9

Canon EOS 60D

463 x 20 second light frames

25 dark frames

47 flat frames

50 bias frames

Stacked using DeepSkyStacker

ISO 1000

Orion ST120 f5 Achromatic OTA

iOptron CEM-25P mount

SVBony SV205 Guide Camera

PHD 2 guide software

Having learned some processing steps I revisited my previous original TIF file produced by Deep Sky Stacker and the result is this. A lot more detail compared to the original. What do you think?

www.theimagetree.co.uk

Orion 150mm Mak

Celestron Deluxe Telecompressor

DGM NPB Filter

Nikon D5100

Shot from my red/orange zone backyard.

Stacked using DeepSkyStacker, processed in StarTools.

North American and Pelican Nebulae (NGC 7000), with the Cygnus gases.

Nikon D7000 (Unmodded), Nikkor 85mm f/2 @ f/2.8 ISO 800.

Approx 1hr 50 mins of exposure (1min lights). Calibrated with darks, flats and bias. Shot through urban light pollution.

Celestron 1.25" UHC/LPR filter.

SkyWatcher Star Adventurer.

DeepSkyStacker, PixInsight LE and Photoshop.