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An unguided/untracked, wide-field view of comet Garradd taken with a 105mm telephoto lens mounted to a Nikon digital camera. The base exposure time was only 1.3 seconds, although multiple images were taken and then combined ("stacked") to produce a higher-contrast and lower-noise result. I hope to do a better job with the image processing as time allows so consider this a draft or first attempt with this data.
Comet Garradd is currently in the constellation Hercules and on the morning of February 3 it was quite close to the globular cluster M92 (shown just below the comet in this photograph). I've convinced myself that there is some evidence of the tails of this comet that extend upward and to the right and downward and to the left (fan shaped or dual tails). If you squint and think good things you may see them also (YMMV). However, the outer stars to the globular cluster M92 are definitely being resolved (Wikipedia reports M92 as having a total magnitude of 6.3).
This image is best viewed in the Flickr light box (press the "L" key to toggle the light box and optionally click on the "View all sizes" menu item to see the image at its largest size).
Comet Garradd, View At Full Size
Photographed on February 3, 2012 between the hours of 5:18AM and 5:33AM PST using a Nikon D5100 DSLR (ISO 3200, 1.3 seconds x 128, 105mm 1:2.5 Nikon Ai lens at f/2.8).
Image stack created with DeepSkyStacker using 128 "light" frames (giving approximately 166 seconds of total integration time), 64 "dark" frames, and 64 bias frames. Final adjustments done in PixInsight v01.07.04.0759 (trial) and Photoshop CS5.
[UPDATE]When reviewing this image using the freeware sky charting software Cartes du Ciel I found that I had somehow flipped and rotated the image, I fixed the rotation but what you see above is still flipped left-to-right (horizontally) which unfortunately I can't correct without a reposting of the image which would break existing links. I also used Cartes du Ciel to estimate the distance between M92 and the comet and that appears to be close to 30' or 0.5 degrees which is about the same angular size as the full moon.
Lastly, I checked some of the stars to see what magnitudes I had recorded and it looks like the faintest stars in this photo are somewhere between magnitude 14 and 15 (that's pretty good for a stack of 1.3 second-long exposures). The relatively bright star that is just touching the top of the comet's coma is 3UC 267-141797 which has a visual magnitude of 12.1 (according to Cartes du Ciel).[/UPDATE]
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Technical card
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: 5412x3630
Dates: Sept. 14, 2018
Frames: Badaar Moon and SkyGlow Badaar: 13x300" (gain: 11.00) 24C bin 1x1
Integration: 1.1 hours
Darks: ~30
Flats: ~40
Avg. Moon age: 5.05 days
Avg. Moon phase: 26.22%
Bortle Dark-Sky Scale: 7.00
Mean FWHM: 6.00
Temperature: 24.00
Astrometry.net job: 2254680
RA center: 306.301 degrees
DEC center: 42.292 degrees
Pixel scale: 0.783 arcsec/pixel
Orientation: 280.424 degrees
Field radius: 0.709 degrees
Locations: Home Observatory, Newmarket, Ontario, Canada
Data source: Backyard
The Triangulum Galaxy always strikes me as looking messy, as if it has permanent bedhead.
Captured under the dark sky of Killarney Provincial Park, Ontario.
Black Eye Galaxy
The Black Eye Galaxy was discovered by Edward Pigott in March 1779, and independently by Johann Elert Bode in April of the same year, as well as by Charles Messier in 1780.
Magnitude: 9.36
C-11/CGEM-DX Hyperstar F/2
Canon 450d full spectrum
30 sec subs ISO 800
Imaged under the almost Full Moon.
Stacked in DeepSkyStacker
I am now able to process RAW files from my Canon EOS 60D using DeepSkyStacker so here is another image of the Triangulum Galaxy!
6 x 20 & 3 x 15-minute exposures at ISO 1600, f10. Off-axis, manually guided. Frames registered and stacked using DeepSkyStacker. Unmodded Canon EOS 40D & Celestron C8 telescope.
Skywatcher 72ED and Atik 314L with UHC and UV/IR block filters piggybacked to main scope on CEM60. 28 subs at 120secs each stacked in Deepskystacker and processed in Photoshop CS2,no flat nor dark frame subtraction.
Nikon D5100, GSO 6" RC, CCDT67, on iOptron iEQ30Pro. Guided using Metaguide with FlexRX. Stacked in DeepSkyStacker, processed in StarTools, final denoise in Noiseware
7x 8min lights, 4x darks, 42x flats (ISO 320)
I should take another 10 or so lights next opportunity - amazing what I can be done with only 7 subs.
6 usable lights (60s), 10 darks, 20 flats, 20 bias. Canon EOS 450D DSLR prime focus, ISO1600. Baader Neodymium filter and coma corrector. Sky-Watcher 150P Explorer on EQ3-2 mount. DeepSkyStacker > PixInsight > PhotoShop. Decided to have another go as disappointed in previous attempt at processing
Date: 6/20/23
Frames: 55x300s - 4h35m
OTA: Orion 8" F3.9 Astrograph
Mount: ZWO AM5
Camera: ASI 533MC Pro
Accessories: SkyWatcher Coma Corrector, Optolong L-eNhance
Guide Scope: Orion 50mm
Guide Camera: ASI 120mm mini
Software: DeepSkyStacker, PixInsight, GIMP
Galaxie du Moulinet -
Luminance 1h25.
RVB 1H / color
Total L-RVB 4h25 minutes.
Lunette 80ED - Caméra monochrome Atik 460ex
Deepskystacker - Pixinsight
The Helix is very difficult to image from my latitude and location, as it is very close to the Southern horizon and then only visible for a very short time due to obstructions. Hence the image is still rather noisy, despite a total of 2 hours & 41 minutes of exposure.
21 manually-guided exposures of between 4 to 10 minutes were taken in 2009, 2010 & 2012; registered and stacked in DeepSkyStacker software.
Unmodified EOS 40D and Celestron C6 telescope at f6.3.
Localisation : CastresmallObservatory (Castres, Tarn - France)
Acquisition Date : 2017-10-05
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 : 80 minutes [40 subexposures of 120" @ ISO 1600]
Dark & Offset 6/9 @ ISO 1600 - Flat & Dark-Flat : 11/9 @ ISO 1600
Temps/Weather : Bonne transparence. T=15°C. Humidité faible. [lune / moon]
Constellation : Vulpecula / Renard
M27 - NGC6853
Mag : 7.30
Dim : 48'x34'
Software Used : Astro Photograph Tool (v3.33), DeepSkyStacker 3.3.6, Pixinsight LE, PhotoShop 7, xnview, Noiseware Community Edition
Date of Shoot: 18 Jan 2011
Location: Cambridgeshire
Nikon D300 with Skywatcher 150PL
7 frames stacked with DeepSkyStacker and processed with GIMP.
Not sharp, still trying to work out how to do this properly.
Version retravaillé
2h 12m 30s
iso 800
27 x 70 secondes
69 x 80 secondes
6 x 90 secondes
Newton 200 mm x 1000 mm F:5.
Neq5 Synscan GoTo
DeepSkyStacker 3.3.2 / Ps cs4
Acquisition BackYardEOS
Seeing bon / -3°c / 89% Rh
Pentax K-5 + Pentax DA* 300mm F4
Stacked 40x1.6s in DeepSkyStacker then PP in Lightroom 4.3
F4
ISO51200
La Nebulosa del Águila, otro objeto messier más para mi colección :). Suma de 14 tomas de 30 segundos, restados darks y bias. Procesado en Deepskystacker y Pixinsight.
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The Eagle Nebula, another messier object to my collection xD. Stack of 14 images, 30 seconds each, with darks and flats. Processed in Deepskystacker and Pixinsight.
This object includes the "Pillars of Creation", made famous by one of the most impressive Hubble Space Telescope images.
Here I used a Canon EOS 40D & Celestron C8 telescope.
Manual off-axis guiding for 4 x 10 & 7 x 5-minute exposures at f6.3 and ISO 1600; subs registered & stacked using DeepSkyStacker software.
Localisation : CastresmallObservatory (Castres, Tarn - France)
Acquisition Date : 2017-09-20
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 : 50 minutes [25 subexposures of 120 sec each (selected from 25)] @ ISO 1600
Calibration : Dark & Bias : 5/9 @ ISO 1600 - Flat & Dark-Flat : 11/9 @ ISO 1600
Temps/Weather : Bonne transparence. Vent nul. T=12°C. Humidité faible.
Constellation : Cygnus / Cygne
Software Used : Astro Photograph Tool (v3.33), DeepSkyStacker 3.3.6, Pixinsight LE, PhotoShop 7, xnview, Noiseware Community Edition
It's pretty noisy, but there it is. The yellow markers identify the supernova in the galaxy M82. Pretty pleased to get this with a DSLR and zoom telephoto lens. The spiral galaxy M81 is in the upper right. I just wondered if I could catch it the first night following it's announcement.
Nikon D90 camera
Sigma 150-500mm f/5-6.3 DG OS HSM APO Autofocus Lens
Sigma 2x EX DG APO Teleconverter
Orion TeleTrack GoTo Altazimuth Telescope Mount
31” exposure, f/12, ISO 2500
600mm (912mm 35-mm equivalent focal length);
Stack of 26 images DeepSkyStacker software
Post-processing with Photoshop CS5
Imaging telescopes or lenses: Sky-Watcher Equinox 80ED
Imaging cameras: QHY8L
Mounts: Skywatcher AZ EQ6 GT
Guiding telescopes or lenses: Celestron 102mm f/6.6 Achromat
Guiding cameras: Magzero MZ-5m
Software: DeepSkyStacker, photoshop, Absoft Neat Image
Accessories: TecnoSky Flattener 1x
Resolution: 3230x2030
Dates: July 28, 2014, July 30, 2014
Frames: 39x600" -15C bin 1x1
Integration: 6.5 hours
Darks: ~32
Flats: ~19
Bias: ~19
Avg. Moon age: 1.84 days
Avg. Moon phase: 4.60%
Bortle Dark-Sky Scale: 3.00
Temperature: 26.00
RA center: 299.933 degrees
DEC center: 35.322 degrees
Pixel scale: 3.229 arcsec/pixel
Orientation: -89.281 degrees
Field radius: 1.711 degrees
This photo was taken from Silchester, Hampshire, UK (51.35 long, 1.06667 lat).on 24 September 2013 between 11.30pm and 12.00am.
The photo is composed of 20 exposures of 75 seconds at ISO 6400 with 8 dark frames subtracted and all stacked using Deepskystacker.
The Monkey Head Nebula (NGC 2175) is a small emission nebula located in the constellation Orion. In my opinion, this nebula really does resemble it's name (although to me it looks more like a human skull).
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.
Nuova elaborazione di IC 1396 . Si tratta di 15 pose da10min riprese con il Takahashi FS-60C e Canon eos 300d modificata a 800 ISO. L’immagine è stata elaborata con il programma DSS (Deep Sky Stacker) utilizzando 5 dark frame e 11 flat field.
Camera: Nikon D50
Exposure: 54m 24s (23 frames) ISO 800 RGB
Focus Method: Prime focus
Telescope Aperature/Focal Length: 203×812mm
Mount: LXD75
Telescope: Meade 8" Schmidt-Newtonian
Guided: PHD Guiding
Stacked: DeepSkyStacker
Adjustments: cropped/leveled in Photoshop
Location: Flintstone, GA
Finalmente mi son deciso ad elaborare una serie di immagini scattate questa estate sul Pollino.
Sono 11 scatti per un totale di esposizione di poco più di 27 minuti, il tutto elaborato con Deep Sky Stacker.
Combined two short sessions worth of data here, total of 19x300s lights. Calibrated with darks, flats, and bias, stacked in DeepSkyStacker. Processed in StarTools, curves manipulation in GIMP, final denoise in AstraImage.
GSO 6" RC, Improved DGM NPB filter, CCDT67 reducer, self-modded Nikon D5100. Guided via SSAG, 50mm guidescope, and PHD2.
Messier Object M39 - Open Cluster
Date: 10-04-2011
Telescope (Lens): Stellarvue SVR 80ED Raptor
Addition Optics: Zhumell Sky Glow Filter; Dental Floss "X" across lens for star spikes
Camera: Canon XSi
Exposure: 41 x 120 sec (ISO 800)
Processing: DeepSkyStacker, Photoshop
Mount: Atlas EQ-G
Tracking: EQMOD / Stellarium
Guidance: PHD Guiding - 9x50 Finderscope w/ Logitech 3000 Pro Webcam
Setup: www.flickr.com/photos/nicholall/5523910532/in/set-7215762...
Astromomy weather as forcasted by Canadian Meteorological Center:
Cloud Cover: Clear
Transparancy: Excellent
Seeing Category: III (Average)
Temp: 65°F
Humidity: 35°
Light Pollution: "Red" - Based on Light Pollution Map
Third shot, taken at 18mm 20 20 second exposures taken at f/3.5 with ISO 1600. Camera just set on ground and photos taken via a connected laptop and EOS utility. Shots then stacked with deepskystacker. Looking for feedback.
View more of my work in my gallery
First attempt at processing last night's captures.
Altair Astro Starwave 102ED-R (2017), HEQ5 Pro (Rowan Belt Drive), Berlebach Tripod, Altair IMX178MC Hypercam, Altair 0.6x Focal Reducer, 30 x 30 Second Exposures. Stacked in DeepSkyStacker. Finished in Photoshop and Lightroom.
M81 (NGC 3031) spiral galaxy in Ursa Major.
Mount: EQ6 EQMOD
OTA: LX10 8" f/10 SCT + 0.63 Antares FR
Guiding: 300mm f/4.5 TAIR lens + LX-mod SPC880NC + PHD
Imaging: Canon mod-1000D + CLS LP filter, 26x420s, ISO 800, 9 darks
Stacked : DeepSkyStacker
Processing : PixInsight LE
Single 1 minute exposure, not processed.
It's really amazing the difference between these faint single exposures and a quick and dirty stacking of them where you can see so much more.
21 x 30-sec exposures at f/4 and ISO 3200 with an astro-modified EOS 600D and Zeiss Jena 135mm f/3.5 lens on a Vixen Polarie star tracker. The frames were stacked on the comet in DeepSkyStacker software, and the result post-processed to increase contrast and to reduce noise and colour gradients caused by light pollution. I also used Starnet++ to temporarily remove the stars (which otherwise dominate after stretching the contrast).
My first attempt at a wide-angle Milky Way shot. Lots of noise because I neglected to take darks and flats. Oops! :) Shot with a Nikon D80 and 18-200VR lens. 11 frames of 15 seconds, unguided, f/5, ISO 1600 stacked with DeepSkyStacker.
M101 Pinwheel Galaxy
Telescope (Lens): Stellarvue SVR 80ED Raptor
Addition Optics: None
Camera: Canon XSi
Exposure: 27 x 180sec (ISO 400)
Processing: DeepSkyStacker, Photoshop
Mount: Atlas EQ-G
Tracking: EQMOD / Stellarium
Guidance: PHD Guiding - 9x50 Finderscope w/ Logitech 3000 Pro Webcam
Setup: www.flickr.com/photos/nicholall/5523910532/in/set-7215762...
Astromomy weather as forcasted by Canadian Meteorological Center:
Cloud Cover: Clear
Transparancy: Above Average
Seeing Category: III (Average)
Temp: 53°F
Humidity: 52°
Light Pollution: "Red" - Based on Light Pollution Map
Telescope: Celestron 8" newtonian reflector, C8N
Camera: Canon 6D (unmodified)
Exposure: 11x8min, ISO 800
Coma corrector: Baader MPCC
Filter: Optolong UHC clip
Mount: CGEM DX
Captured with BackyardEOS
Registered and stacked with DeepSkyStacker
Photographed from Round Rock TX (Orange zone)
Sh2-142 , chiamata anche Nebulosa Mago è una nebulosa a emissione visibile nella costellazione di Cefeo. Si individua nella parte centro-meridionale della costellazione, prolungando la linea che congiunge le stelle ζ Cephei e δ Cephei e deviando poco verso sud; il periodo più indicato per la sua osservazione nel cielo serale ricade fra i mesi di luglio e dicembre ed è notevolmente facilitata per osservatori posti nelle regioni dell'emisfero boreale terrestre, dove si presenta circumpolare fino alle regioni temperate calde. Sh2-142 è una regione H II situata sul Braccio di Perseo, distanza 11530 anni luce. Appare legata al giovane ammasso aperto NGC 7380.
Dati di ripresa, Telescopio SW 72ed ridotto 0,8x Camera Qhy294c pro , filtro L-Ultimate2" e Uv ir/cut Svbony 2", guida Phd2, cam guida Asi 224 tubo guida 60/240, montatura Heq5pro, software di acquisizione N.I.N.A. scatti da 300" tot. 2h e 50' più 30' per le stelle. somma DeepSkyStacker, elab. Pixi+PS
Telescopi o obiettivi di acquisizione: Orion Mini Guidescope
Camere di acquisizione: SVBONY SV305
Montature: Celestron SLT
Software: SharpCap Pro 3.2 Sharcap · DeepSkyStacker · photoshop
Date:02 Gennaio 2021
Pose: 248x10"
Integrazione: 0.7 ore
Giorno lunare medio: 18.07 giorni
Fase lunare media: 88.13%
Photographed in Cambridge, MA. Stacked from 358 frames of 2 sec. exposure at F/5.0, 190 mm focal length, ISO 1600.
The Pleiades back for the Winter.
This is made from 25 5 minute exposure + 25 2 minute exposures with a Canon EOS 1100D with Astronomik CLS filter.
Stacked in Deep sky stacker and finished in Photoshop CS6.
I finally got DSS (DeepSkyStacker) working :-)
User error :-(
These are the first two real attempts of some deep sky objects.
Technical card
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: 5194x3488
Dates: Sept. 11, 2018
Frames: Badaar Moon and SkyGlow Badaar: 30x120" (gain: 11.00) 15C bin 1x1
Integration: 1.0 hours
Darks: ~20
Flats: ~40
Avg. Moon age: 1.96 days
Avg. Moon phase: 4.28%
Bortle Dark-Sky Scale: 7.00
Mean FWHM: 5.75
Temperature: 12.00
Locations: Home Observatory, Newmarket, Ontario, Canada
Data source: Backyard
Mars top left, Sirius down below, and Orion in the middle. Stack of 10 shots, 70 seconds total. Stacked using DeepSkyStacker.
Shotdate: 3 sept. 2014
Camera: Nikon D3x
Optics: Celestron 9.25" EdgeHD
Mount: SkyWatcher NEQ6 Pro
Guiding: APO 500mm F90mm with LVI SmartGuider 2
Exposure: 15 seconds
ISO-speed: 800
Stacked in DeepSkyStacker:
Stacking mode: Standard
Alignment method: Automatic
Stacking 32 frames total exposure: 8 mn 0 s
RGB Channels Background Calibration: No
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: 25 frames exposure: 15 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Flat: 32 frames exposure: 1/2 s
Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)
Post-processing in PixInsight 1.8
Garradd, Coathanger, NGC 6802 Two pane mosaic at 630mm CanonXT, 2(40X100") SVR90, Atlas EQ-G, DeepSkyStacker, Photoshop levels and curves, guided with Orion SSAG and tandem mounted SVR70ED.