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Winner of Cloudy Nights Beginners DSO Challenge June 2013
June 17, 2013
17x 1 minute @ 400 ISO
15 Darks
15 Flats
15 Dark Flats
Orion XT8 (Undobbed)
Canon T3i
Guiding: QHY5L-II/Orion Mini/PHD
Capture Software: Backyard EOS
Processing: DeepSkyStacker/StarTools
Alrighty, here's another one from last night. The Pleiades star cluster. (M45). It's easily visible even to the naked eye, but imaging the object is usually required to bring out the whisp-like nebulosity.
01/28/12
Joshua Tree, CA
9 frames = 8 minute 55 second exposures ISO 6400
Images stacked in DeepSkyStacker, processed in Gimp 2
6" Meade Newtonian Reflector LXD75 EQ Mount
Canon Rebel T3 DSLR
The Rosette Nebula is a beautiful nebula shaped like a christmas wreath or donut by the stellar winds of the massive stars in the cluseter at its heart. The glowing pink is Hydrogen Alpha emissions from Ionized H2 gas.
It's a planetary nebula located about 1000 light years away in the constellation of Vulpecula. Like M57, it was created when a star similar to our own hit old age and puffed off it's outer layers.
Without a camera, just looking through the telescope, no colour is apparent. It just looks like a fuzzy patch faintly dumbell shaped, no sign of the outer shell.
The photo consists of 30x 20 second exposures at ISO1600 on a Canon T1i DSLR at prime focus on a 10 inch SN-10AT telescope using a light pollution filter. 10 minutes total exposure time. Photo stacked with Deep Sky Stacker. Cleaned up a little with Gimp.
I tried to take more care with this one, limiting the exposure length to try and keep the stars looking sort of like stars, although they are still kind of squiggly.
Stacked a series of 19 20 second images using deepsky stacker, Photoshop to stretch using levels adjustment and a removal of a gradient. Jupiter is the bright object, Antares is to the lower right. Images from Big Bend National Park August 2019.
Taken from Mt. Pinos. Fought my autoguider the whole time. Only 8 subs, 4 minutes each.
ZS66, LXD75, Nikon D60. Stacked with DeepSkyStacker, processed in GIMP.
Canon 50mm EF lens (MK I), at f/2.8, ISO 800. Five hand-tracked exposures (total exposure time 3m 15s), stacked in DeepSkyStacker and processed in Photoshop.
The colour gradient is caused by light pollution, which almost washes out this part of the sky from where I am.
Celestron Nexstar 130Slt
Canon Eos10D
DeepSkyStacker
Photoshop
80*20sec, iso400
6 dark, 6 flat
I didnt edit this much. In time I have to make more ouf of this.
This might be the last session before next season. Nights are getting too bright..
It's definitely globular cluster season, at least from the heavily obstructed skies of my back garden!
Manually guided off-axis for 8 x 15-minute exposures at f10, ISO 1600, taken over 4 nights.
Subs registered & stacked using DeepSkyStacker software.
Unmodded EOS 40D & Celestron C8 telescope
12/23/2013
Winner of Dec 2013 Cloudy Nights Intermediate DSO Contest
Location: The George Observatory - Brazos Bend State Park, Texas
Scope: AstroTech 72ED
Mount: Celestron AVX
Camera: Canon Rebel XT (350D) w/Baader Mod
Guiding: QHY5L-II/Orion Mini 50mm/PHD
Capture: Backyard EOS
Processing: DeepSkyStacker/StarTools
35 x 4 min @ 400 ISO
Darks & Flats & Dark Flats
AstroTech 2" Field Flattener
Localisation :
CastresmallObservatory (Castres, Tarn - France)
Acquisition Date :
2016-10-03
Author :
Pierre Rougé
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 :
75.0 minutes [15 subexposures of 300 sec each (selected from 15)] @ ISO 1600
Calibration :
Dark & bias : 9/11 @ ISO 1600 - Flat & Dark-Flat : 9 @ ISO 1600
Weather :
Bonne transparence. Vent nul. T=x18°C. Humidité nulle.
Constellation : Cassiopea / Cassiopée
Software Used :
Astro Photograph Tool (v3.13), DeepSkyStacker, PhotoShop CS
---Photo details----
Stacks : 14 frames
Exposure Time : 14x122sec (28min total) @ ISO 100 (+11 flats)
Stack program : DeepSkyStacker
Stack mode : Entropy Weighted Average + 2x Drizzle
Post processing : CS6 for : curves adjustments, contrast, saturation and unsharp mask filter, Lightroom 4 for local adjustments (contrast, exposure, noise reduction), global WB adjustments
Crop: 6.4MP out of 24MP
---Photo scope---
Camera : Sony SLT-A77
Tube : Skywatcher Explorer 150P
Type : Newton
Focal length : 750 mm
Aperture : F/5
---Guide scope---
Camera : Starlight Xpress Lodestar
Tube : Skywatcher StarTravel-102
Type : Refractor
Focal length : 500 mm
Aperture : F/4.9
---Mount---
Mount : Skywatcher EQ-6
---Image details---
Objects
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--
Source : dso-browser.com/
21 lights (8s f/5.6 ISO 1600 Canon EOS450D DSLR 18-55 lens @55mm (88mm 35mm equivalent)) Darks "in-camera", no flats or bias. Stacked in DeepSkyStacker; processed in PixInsight and Photoshop. Star Spikes Pro 2 used to emphasise the dolphin asterism.
Looks to be similar magnitude to 29 Vulpeculae ~4.8. Comparison magnitudes from AAVSO chart 12506UL
The M42 Orion Nebula and Running Man Nebula. 75x45 sec exposures on a SkyGuider Pro tracker with Nikon Z6 and Z 100-400mm S lens with Z TC-1.4x teleconverter @ 560mm, f/8 and ISO1600. Stacked in DeepSkyStacker and stretched in Photoshop. No processing other than stretching and curves.
Taken from underneath the Owachomo bridge.
Canon T2i, ISO 6400, 25 sec exposure, 18 mm, f/3.5
10 images stacked with DeepSkyStacker (beta), post-processed in PS (CS4)
New moon!
From the National Bridge website:
The beauty of the night sky, the lack of light pollution, and the National Park Service commitment to night skies as a natural resource, led the International Dark-Sky Association this spring to designate Natural Bridges National Monument as the world’s first International Dark Sky Park.
Natural Bridges is one of the darkest national parks in the country according to a comprehensive study of night sky quality conducted by the National Park Service.
Just how dark is it? “It’s the only Bortle class 2 sky they’ve documented,” said Chris Luginbuhl of the U.S. Naval Observatory in Flagstaff, Arizona., and a board member of the International Dark-Sky Association. “In plain English that means it’s the darkest or starriest sky they’ve seen while doing these reviews. The Bortle system is a 10-level scale with one and two being the darkest skies and 10 having the most light pollution.”
I got outside with the telescope over the weekend, albeit only briefly. I took the opportunity to finally image M45, something I'd not gotten round to previously. I wasn't really in the mood for it, and unfortunately that led to me taking some shortcuts and the final image suffered somewhat because it.
I didn't accurately level or polar align the mount, so in the 6 minute-long exposures I ended up taking, there was some rotation of the field, so the stars towards the edge of the image were obviously elongated. The image above is significantly cropped from the full image, so thankfully it's not noticeable. Still, I intend to re-visit this target in the future!
Takahashi FSQ85 f/5.3 + Canon 500D at prime focus, guided using Equinox ED80 + QHY5, 11 x 6m00 subs, captured using EOS Utility, stacked in DeepSkyStacker.
First serious attempt to use DeepSkyStacker to stack Milky Way photos. Used 30 lights and 10 darks.
Taken with 8mm Samyang fisheye lens on a Canon T1i DSLR camera. Used a SmaTrig2 time lapse controller. Shots done at 3200 ISO and F/5.6 for 30 seconds each.
The main object that caught my attention while looking for what to experiment with was the constellation 'Sagittarius'.
1-2-2014 Galaxia Molinillo del sur
Light 24 x 1.30seg ISO 800
10 Dark, Flat, Bias
Canon t5i NO modificada
Celestron 130eq / Montura cg-5
Apilado DeepSkyStacker / Procesado PI
Autor: socios Marcela Díaz y Pedro Muñoz.
Taken on the night of 19 July 2020.
This is a stack of 38 frames each Tv 8, Av 3.5, ISO 800 at 10mm. Stacked using Sequator (I couldn't get DeepSkyStacker to work with these for some reason), then tweaked using a combination of Luminar, NeatImage and Photoshop.
12/23/2013
Location: The George Observatory - Brazos Bend State Park, Texas
Scope: AstroTech 72ED
Mount: Celestron AVX
Camera: Canon Rebel XT (350D) w/Baader Mod
Guiding: QHY5L-II/Orion Mini 50mm/PHD
Capture: Backyard EOS
Processing: DeepSkyStacker/StarTools
38 x 4 min @ 400 ISO
Darks & Flats & Dark Flats
AstroTech 2" Field Flattener
This is a semi-narrowband composition of the Flaming Star Nebula (IC405) and IC410. Since I use a full-spectrum DSLR, I used an Improved DGM NPB filter which allows through the spectrum lines of Hb (486nm) and both Oiii (495.9nm + 500.7nm) in one passband, and Ha (656.3nm) in a second 10nm-wide passband. This allows for decently color-balanced results to start with when using a full-spectrum sensor. I split the raw output stack from DSS into RGB channels (R being virtually all Ha), processed them separately in StarTools, created a synthetic luminance frame, then added the color back in using a bi-color approach with Ha as red and a blended G+B frame as blue, letting StarTools interpolate green.
Shot using self-modded full spectrum Nikon D5100 through Orion ED80 and CCDT67 reducer, on iOptron iEQ30 Pro mount. Used the Improved DGM NPB filter by Omega Optical along with the UV/IR cut filter by Optolong. Guided and dithered using Metaguide. Stacked in DeepSkyStacker, processed in StarTools. Used GIMP 2.9.3 to split RGB channels, and Noiseware for final denoising.
18x 240s @ 1600ISO (calibrated with flats, darks, and bias)
Canon 400D EF 75 - 300mm f/4 - 5.6 lens. Manual Barndoor mount
20 x 45 sec light frames (300mm f5.6 ISO 1600)
10 x 45 sec dark frames
Conditions:
Limiting visual magnitudel 4.0 - 4.5
Transparency - average
Seeing - average
Lots of light polution. Picture taken directly over Edmonton (pop 550,000) about 6 km from downtown in the burbs.
Stacked using DeepSkyStacker
Processed using PixInsight
1. Curve Adjustment to brighten
2. Background Extraction to eliminate vignetting
3. Set light and dark points
4. Play with curves to get what I could out of the photo
I took this photo from inside my house out of my bedroom window. It was -32C outside. I could not polar align the mount so I just guessed where the celestial pole was. Being new to astrophotography (I believe I have only a dozen processed pics) I cannot overstate how enjoyable it is to use a barndoor mount. I do not have a big budget and am saving for a telescope for astrophotography. I have a good camera with the cheap lens, add a couple of pieces of wood with a screw and I am amazed at what can be achieved. Anyone that cannot afford a good mount for widefield photography should build this type of mount. Even with a 300mm lens you can barely detect any star trails. I have modified my barndoor. Just like with a telescope, the mount needs to be sturdy, Any movement will ruin the picture. Rather then use a photo tripod (which was just to shaky) I screwed it directly onto a small table. I also made it so that I can change the angle of the axis incase I cannot find any flat ground. I just use a level to ensure it is somewhat level. I have downloaded a new pic.
No guiding, and I didn't get my mount spot on, so this is is made up of 14 shots, 10 seconds each at various ISOs, and my first go with DeepSkyStacker. So much to learn!
The Large and Small Magellanic Clouds, which are satellite galaxies of the Milky Way. This image was made by stacking 15 x 15 second exposures (plus 6 x dark exposures) taken with the 6D and EF 35mm f/2 lens at f/2.8 and 6400 iso, using DeepSkyStacker.
Well past its best here, but still showing the wide dust tail and long ion tail - the latter is faint but can be seen heading right out of the frame in the 10 o'clock position.
20 x 15-second exposures at f/4 and ISO 3200 in moonlight. Canon EOS 7D and Zeiss Jena 135mm f/3.5 lens on a Vixen Polarie star tracker.
Frames stacked on the comet in DeepSkyStacker software; curves and colour balance adjusted in Canon Photo Professional; noise reduced using Cyberlink PhotoDirector.
Image by Herman Bonnet
14 January 2013, Bloemfontein
Camera: Canon 60Da
Mount: CGEM PRO
Lens: Canon EF 50 mm F4 ISO 1600
10 x 5min light frames
5x bias frames
5x flat frames
5x dark frames
Stacked in DeepskyStacker
Levels and curves in Photoshop
- Canon 7D Mark II
- Orion 8" f/3.9 Astrograph
- Baader MPCC Mark III Coma Corrector
- Orion Atlas Pro Mount
- ZWO ASI 120MC-s guide camera w/ 60mm guide scope
- 22 x 300 second Lights ISO 1600. Dithered each frame
- 10 flats
- No dark or bias
- Captured with BackyardEOS
- Guided with PHD2
- Stacked with DeepSkyStacker
- Processed in Pixinsight
- Imaged on September 2nd 2016 from the Grandview Campground in the White Mountains near Bishop, California.
Imaging telescope or lens:Explore Scientific 102mm ED CF APO triplet ED 102 CF
Imaging camera:Altair Hypercam 183C
Mount:iOptron iEQ30 Pro iOptron
Guiding telescope or lens:Starwave 50mm guidscope Starwave
Guiding camera:Altair Astro GP Cam 130 mono Altair
Focal reducer:Altair Lightwave 0.8 Reducer/Flattener Altair Lightwave
Software:PHD2 2.6.4, APT - Astro Photography Tool APT 2.43, DeepSkyStacker (DSS) Deepskystacker 3.3.2, Photoshop CC 2017 Photoshop
Filter:Badaar Moon and SkyGlow Badaar
Resolution: 5419x3627
Dates: Sept. 11, 2018
Frames: Badaar Moon and SkyGlow Badaar: 13x300" (gain: 11.00) 18C bin 1x1
Integration: 1.1 hours
Darks: ~30
Flats: ~40
Avg. Moon age: 1.96 days
Avg. Moon phase: 4.28%
Bortle Dark-Sky Scale: 7.00
Mean FWHM: 6.50
Temperature: 15.00
Astrometry.net job: 2246003
Locations: Home Observatory, Newmarket, Ontario, Canada
Data source: Backyard
Location :CastresmallObservatory (Castres, 81- France)
Acquisition Date :2016-03-14
Author :Pierre Rougé
Scope :Newton Orion 200/1000 (f/5) plus MPCC Baader
Autoguiding :Skyxatcher Synguider v1.1 & Meade ETX 70/350 mm
Camera :Canon EOS 400D (Digital Rebel Xti) refiltré Astrodon in Side (modded Astrodon in Side)
plus EOS CLIP CLS Astronomik
Exposure :66.0 minutes [22 subexposures of 180 sec each (selected from 22)] @ ISO 2000
Calibration :Dark & bias : 56/56 @ ISO 2000 - Flat & Dark-Flat : 9 @ ISO 400
Weather :Bonne transparence. Faible vent de E à SE. T=17°C humidité faible
Software Used :Astro Photograph Tool v3.00, DeepSkyStacker 3.3.6, PhotoShop CS
It's a bit grainy, but what do you expect with just 3 frames :)
The halo in the image is reflection from my roof, I just have to do this over soon.
Shot date: 28st November 2011
Location: Home, Teuge, NL
Camera: Nikon D3x
Optics: Celestron Edge HD 9,25"
Mount: Skywatcher NEQ6Pro
Guiding: LVI Smartguider 2
------------------------------------------------------
Stacking in DeepskyStacker 3.3.2
DeepSkyStacker settings:
Stacking mode: Standard
Alignment method: Bicubic
Stacking 3 frames (ISO: 800) - total exposure: 15 mn
RGB Channels Background Calibration: Yes
Per Channel Background Calibration: No
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Offset: 120 frames exposure: 1/8000 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Dark: 14 frames exposure: 5 mn
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Flat: 47 frames exposure: 1/2 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
------------------------------------------------------
Postprocessing in PixInsight Core 1.7 Starbuck
DynamicBackgroundExtraction
ColorCalibration
HistogramTransformation
ChannelExtraction: L
HistogramTransformation: L
ATrousWaveletTransform: L
CurvesTransformation: L: Masking
CurvesTransformation
ACDNR
HistogramTransformation
The Crab Nebula is the remnant from the supernova observed by Chinese astronomers in the year 1054. At it's center is a neutron star roughly the mass of the sun, but squished down to the size of a city.
29x 30 second exposures shot with a Canon T1i DSLR at ISO1600 on a 190mm F5.3 Skywatcher Maksutov Newtonian telescope. 14.5 minutes total exposure time.
I shot 54x 30 second exposures, and tossed out nearly half of them due to my unsteady LXD75 mount not tracking the stars sufficiently.
It was shot using the camera's long exposure dark frame noise reduction. I need to shoot some flat frames to remove the vignetting.
M65, M66 and NGC3628.
~150 images stacked using DeepSkyStacker.
Each photo 300mm/f2.8; 1.6s, ISO6400, exposure bias +5, and processed to enhance the highlights before stacking.
Nikon D810 with Sigma 120-300/2.8.
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated south of Orion's Belt. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across.
Date: 12-13-2011
Seeing: moon glow and cloud haze
Scope: Stellarvue SV105-3SV
Mount: Celestron CGEM
Finder: Stellarvue F50M3
Focal Reducer: Stellarvue SFF7-3SV
Filter: Baader Planetarium Moon & Skyglow Filter
Camera: Canon T2i/550D unmodified
Autoguide: Orion Starshoot + PHD
Image Capture: Nebulosity 2
Lights: 10 x 2min @ 400 ISO, 10 x 5min @ 400
Darks: 10 x 2min @ 400 ISO, 10 x 5min @ 400
Stacking: DeepSkyStacker
Image Processing: Adobe Lightroom 3.6 64bit
OS: Windows 7 64bit
Had a quick break in the clouds. Never got enough exposures so I though I would experiment a little. 3x drizzle in Deepskystacker. It amazes me what can be captured with a 80mm scope.
Technical info about the image:
Object: Messier 27, The Dumbbell Nebula
Mount: HEQ5 Pro
Imaging scope: Equinox 80ED
Imaging FL: 400mm
Imaging camera: unmodified Canon 400D
Lights: 3 x 600 sec (30 min) at ISO 1600
Calibration: no darks, no bias, no flats
Guide scope: KWIQ Autogider
Other details: guided with PHD, calibrated and stacked using Deep Sky Stacker, post-processed in Pixinsight and Photoshop CS3.
M33 Triangulum Galaxy
October 8, 2016
Mount: Atlas EQ-G
Scope: SkyWatcher ProED 120mm f7.5
Camera: Canon EOS Rebel T3
Lights: 350 @45sec 3200 ISO
Darks: 50 @45sec ISO 3200
Flats: 14 @1/4sec ISO 3200
Biases: 50 @1/4000sec ISO 3200
Stacked in DeepSkyStacker 3.3.4
Processed in PixInsight, PhotoShop, and LightRoom
ISS (Left upper corner) superimposed onto the background with M57.
ISS is shot at an exposure of 1/320s ISO 200 and the background is a stack of 20 lights of 30 seconds ISO800.
Camera: Nikon D3x
Optics: NIKKOR F11 f1000mm
Mount: AstroTrac TT320
Stacking in DeepSkyStacker 3.3.2 and postprocessing in PixInsight 1.8
Shotdate: March 6 2011
Camera: D3x
Optics: Celestron 9,25 EdgeHD
DeepSkyStacker
16 frames of 300 seconds (ISO: 800) - total exposure: 1 hr 20 mn 11 s
RGB Channels Background Calibration: Yes
Per Channel Background Calibration: No
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Offset: 120 frames exposure: 1/8000 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Dark: 8 frames exposure: 5 mn
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Flat: 40 frames exposure: 1/4 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
PixInsight 1.7
DynamicCrop
DynamicBackgroundExtraction
11
ChannelExtraction
ATrousWaveletTransform: Processing view: Autosave_DBE_L
HistogramTransformation: Processing view: Autosave_DBE
Autosave_DBE_L: Masking from swap files...
ColorSaturation: Processing view: Autosave_DBE
ACDNR: Processing view: Autosave_DBE
HDRMultiscaleTransform: Processing view: Autosave_DBE
ChannelExtraction: Processing view: Autosave
HistogramTransformation: Processing view: Autosave_L
ATrousWaveletTransform: Processing view: Autosave_L
CloneStamp: Processing view: Autosave_L to cover the bright cores
HistogramTransformation: Processing view: Autosave_DBE
Autosave_L: Masking from swap files...
OTA: Orion ED80 with Orion field flattener for short refractors
Camera: ZWO ASI1600MM
Exposure: R: 30x1min, G:30x1min, B:30x1min
Mount: CGEM-DX
Captured with SGP
Registered and stacked with DeepSkyStacker
Photographed from Round Rock TX (light pollution zone: red)
Shotdate: 29-1-2014
Camera: Nikon D3x
Optics: 105mm Micro Nikkor @ f4.0
Mount: AstroTrac
ISO speed: 1600
Exposure: 39x125 seconds for a total integration time of 1 hr 22 mn
Stackin in DeepSkyStacker, post-processing in PixInsight 1.8
Camera: Nikon D50
Exposure: 33 x 120s ISO 1600 RGB
Filter: Orion Skyglow Imaging Filter
Flattener/Correction: Anteres .63x Focal Reducer
Focus Method: Prime focus
Telescope Aperature/Focal Length: 256×2500mm
Telescope: Meade LX200-GPS 10" ACF
Guided: PHD Guiding
Stacked: DeepSkyStacker
Adjustments: cropped/leveled in Photoshop
Location: Flintstone, GA
Shotdate: 26th november 2010
Location: De Cockdorp, Texel, NL
Camera: Nikon D3x
Optics: 80-400mm @ 80mm f7.1
DeepSkyStacker settings:
21 frames 300 second exposure (ISO: 800) - total exposure: 1 hr 45 mn 8 s
RGB Channels Background Calibration: No
Per Channel Background Calibration: Yes
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Offset: 120 frames (ISO: 800) exposure: 1/8000 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Dark: 20 frames (ISO : 800) exposure: 5 mn 2 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Flat: 42 frames (ISO: 800) exposure: 1/13 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Stacking in DeepskyStacker 3.3.2
Postprocessing in PixInsight 1.6
Processes used: DBE, ColorCal, HistoStretch, HDR, ACDNR, HistoStretch, Masked Curves, HistoStretch.
For the Photoshop version: www.flickr.com/photos/14721988@N02/5220648648/
Finally got round to getting outside without the worry of getting up early for work. We've had some beautiful Evenings this week and another good night is planned tonight.
I took this with a modified Canon 1100D with a CLS filter. 35 5 minute exposures at ISO 1600 on a Skywatcher 80ED Pro.
Processed in Deep Sky stacker and photoshop with 12 dark frames.
Comet C/2014 Q2 (Lovejoy) looking spectacular on 8/01/2015. Taken from the Gold Coast Hinterland Australia using Olympus OMD EM1 and Zuiko Digital 150mm f2.0 lens on IOptron Skytracker mount. 11x30 second exposures ISO1600 Stacking on Stars in DeepSkyStacker and Processing in Neatimage and Photoshop.
Comet Holmes in the night of 21 November around 21hours. Picture taken in the city of Oostende (Belgium). There was alot of licht polution and the moon wasn't making it better.
This is a crop from a picture made with a Nikon D50 and Sigma 150mm macro lens. ISO 1600 at f/2.8. 59 images of 2s stacked with DeepSkyStacker