First light with new GSO reflector...

OTA: GSO 6" F/5 newtonian reflector

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

Camera: ZWO ASI1600MM

Exposure: Ha 7x10min, OIII 7x10min, S2 7x10min

Mount: CEM70G

Captured with SGP

Registered and stacked with DeepSkyStacker

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

- Canon 60D

- Canon 70-200mm f/2.8L w/ 2x teleconverter (at 400mm f/5.6)

- Orion SSAG w/ 50mm mini guidescope

- Celestron CGEM Mount

- 29 x 300 second 1600 ISO Light Frames (2.42 hours)

- 10 x 300 second Dark Frames

- 15 Bias Frames

- Captured in BackYardEOS

- Stacked in DeepSkyStacker

- Processed in PixInsight

I've got a lot to learn about astrophotography post-processing, but this was the best I could do to preserve the faint tail. I don't know if it is wishful thinking or real, but it looks to me like the tail can be seen back almost to below the Pleiades. This was taken with a Tokina AT-X 90mm f2.5 on a Pentax K-5. A few exposures were stacked using DeepSkyStacker (which I'm also just learning to use). The camera and lens were on a Vixen Polarie for tracking.

I remembered that I had a 135mm 1:2.8 somewhere so I dug it out and filled up a card with two second exposures to see what the extra stop would get me. The wider field of view means I can get the Orion nebula and the Flame Nebula in one frame, and Deep Sky Stacker helps bring them out. The Flame Nebula is the fuzzy divided patch just to the left of the left-most star in the belt of Orion.

Taken with:

-Sigma 24-105mm f/4 lens @ 24mm f5.6

-Stock APS-C sensor mirrorless camera

-Skywatcher Star Adventurer tracking mount

8x300 second frames stacked in Deepskystacker.

Date is somewhere around 2020.

Location :

CastresmallObservatory (Castres, Tarn - France)

Acquisition Date :

30/08/16

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 :

150.0 minutes [30 subexposures of 300 sec each (selected from 30)] @ ISO 1600

Constellation :

Vulpecula / Petit Renard

Calibration :

Dark & bias : 12 & 9 @ ISO 1600 - Flat & Dark-Flat : 9 @ ISO 1600

Weather :

Bonne transparence. Faible nul. T=24°C. Humidité nulle

Software Used :

Astro Photograph Tool (v3.11), DeepSkyStacker, PhotoShop CS

Starting at the top of the image:

NGC 1981 (Open Cluster)

NGC 1977 (Running Man Nebula)

M43 (nebula)

M42 (Orion Nebula)

NGC 1980 (Open Cluster with nebula)

100 x 8-s exposures, ISO 2000, f/7.1, 250 mm, combined in DeepSkyStacker. Nikon D800 mounted on a Sky-Watcher Star Adventurer.

2017/08/19 (cropped)

nova.astrometry.net/user_images/1746889#annotated

Camera: Canon EOS 700D (unmod)

Lens: Sigma APO 70-300mm F4-5.6 DG MACRO @ 150 mm, f/5

Mount: SkyWatcher Star Adventurer (unguided)

Exposure: 2 min*20 frames, ISO1600, 43 dark frames

Process: DeepSkyStacker, Photoshop CS6, PixInsight LE 1.0.2

Location: Kunyang parking lot, Hehuan mountain, Taiwan

Tankerton seafront, Whitstable, Kent UK 22.12hr Canon 60 Da + 50mm macro lens, 36 x 15sec (total 9 minutes) at 1600 ISO Stacked in Deep Sky Stacker, cleaned up in Photoshop CS6.

I was pleased to record the elusive thin blue ion tail. The comet was a very easy object in binoculars, and I think I did manage to see a glimpse of it with the naked eye.

The Orion Nebula is a star forming region located approximately 1,600ly from Earth in the constellation Orion. There are believed to be over 700 stars being born in this nebula.

It is visible to the naked eye as the centre 'star' in the sword of Orion. (see Orion constellation in my wide field set of images)

Much of this nebula is illuminated by four stars in an open cluster called "the Trapezium." These remarkable 4 stars are just visible in this image in the lower centre of the nebula. There are reflection and emission nebulae present in this image. The bluish wisps are reflection nebulae, reflecting radiation while the red regions are emission nebulae.

________________________________________________________

ED80 APO Refractor | Rebel XS DSLR not modded | Guided | HEQ5 Pro mount

stacked in DeepSkyStacker | processed and layer masked in Photoshop | Noiseware

x8 8 second exposures = 1min 8 sec

x8 30 second expoures = 4min 2sec

x8 480 second exposures = 1hr 6min 29 sec

total: 24 frames stacked | 1hr 11min 39sec

OTA: Celestron C8N, 8" newtonian reflector

MPCC-III coma corrector

Camera: ZWO ASI1600MM

Exposure: L 94x1min. RGB 15x2min

Mount: CGEM-DX

Captured with SGP

Registered and stacked with DeepSkyStacker

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

C9.25 @ f10 on a CEM60,Starlight Xpress filterwheel/OAG and 314L.

7x300 second subs in Ha and 7x300 second subs in OIII stacked in Deepskystacker,colour combined in Maxim DL4 (Ha,OIII,OIII) and processed in Photoshop CS2

Image taken 1/04/19

10 shots, each 6 s, 50mm, f/2.8, ISO 800, stacked in DeepSkyStacker.

Pretty good for fixed-tripod astrophotography taken from my own backyard. Cooperative weather certainly helped (good lower-atmosphere transparency, with some high thin clouds thrown in to give the bright stars a gauzy glow).

Here's comet Lovejoy C/2014 Q2 taken on Mont Cima near Aspremont on an evening with Florent Dubreuil his father. On a full moon night as I am leaving Nice before the weekend! Big thank you Florent for the tracking mount!

35 Light frames, 25 Darks, 20 Bias stacked in DeepSkyStacker and processed in LR5. 35 x 30 sec, ISO800 , F/5.6, 120mm cropped

Shot from home (Bortle 6). Quick process with Ez suite. Slightly egg-shaped stars due to tripod mount not being fully secured.

Camera: Sony A7R II (unmodded)

Lens: Canon EF 200mm f/2.8 L II + EF 1.4x II = 280mm @ f/5.6

ISO: 640

Subs: 98 x 120sec lights, no calibration frames

Tracker: 3D-printed OpenAstroTracker

Processing: Camera Raw (crop, reduce colour noise, reduce highlights), DeepSkyStacker, Pixinsight (DBE,BC,CC,Ez stretch,MT to reduce stars)

Homúnculo e fechadura

28-11-2020

1969 lights 100 draks 0,4s exp

Toya 114mm AZ-2

ASI 120MC

FireCapture, DeepSkyStacker, PixInsight

Matupá/MT

Localisation : CastresmallObservatory (Castres, Tarn - France)

Acquisition Date : 2017-02-18

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 : 87 minutes [29 subexposures of 180 sec each (selected from 29)] @ ISO 1600

Calibration : Dark & Bias : 5/9 @ ISO 1600 - Flat & Dark-Flat : 11/9 @ ISO 400

Temps/Weather : Bonne transparence. Vent nul. T=9°C. Humidité faible.

Constellation : Orion / Orion

Software Used : Astro Photograph Tool (v3.20), DeepSkyStacker 3.3.6, Pixinsight LE, PhotoShop 7, xnview, Noiseware Community Edition

47x120 seconds ISO1600. Skywatcher 100ED Esprit APO triplet and Canon EOS 6D full spectrum. Stacked in DeepSkyStacker and processed in Pixinsigth 1.8. Image date may 24, 2015.

OTA: Celestron C8N, 8" newtonian reflector and MPCC-III

Camera: ZWO ASI1600MM

Exposure: RGB: 12x2min each, L:49x2min

Mount: CGEM-DX

Captured with SGP

Registered and stacked with DeepSkyStacker

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

First picture of the year!

Rosette Nebula

Canon 200mm F2.8 @ F3.5

Canon T4i ISO 800 45 seconds

8x light frames

iOptron SkyTracker

DeepSkyStacker

Pixinsight 1.8

11% moon illumination

Poor seeing/Hazy

Bortle 4

22 lights (30s ISO 1600) 10 darks, 20 flats, 20 bias. Skywatcher 150 Explorer Newtonian EQ3-2 mount. DeepSkyStacker > PixInsight > Photoshop CS5.

Second test image with the mono 350d. Full calibration, but still without cooling.

NGC 1499, California Nebula (H-alpha)

Lens: Canon 300mm f/4

Mount: CGEM DX

Camera: Canon 350d mono, no cooling, 45F ambient

Exposure: 47x4min ISO 1600

Astronomik 12nm H-alpha filter

Guided with PHD, SSAG, 9x50

Captured with BackyardEOS

Mono conversion with dcraw -D -4 -T -b 16

Registered and stacked with DeepSkyStacker

Photographed from Round Rock TX (Orange zone)

M104 or the Sombrero Galaxy on the Virgo - Corvus border. I was quite pleased with this result even though it was quite low in the sky when taken.

Unmodified Canon 350D - 6 x 6 minute exposures + darks and flats. Processing in DeepSkyStacker and Photoshop.

Taken at the prime focus of an Intes MN71 (1060mm at f6) on an EQ6 Pro, Autoguide via PHD and a DSI 1. Image scale is a bit smaller than I'd like but we use what we have!

I reprocessed the previous JPG image using curves on the red channel in PS. Couldn't get the same result from the TIF, but now it's looking a little more like Orion should look! :)

What is that haze to the north?

KP6 Aurora

Balmy Beach, Ontario, Canada

Yi4K 30 seconds ISO 800 RAW

Dark frame subtraction with

DeepSkyStacker

Pixinsight 1.8

Shotdate: 23-11-2013

Camera: Nikon D3x

Optics: Celestron 9.25"EdgeHD

Guiding: LVI SmartGuider2 om APO F500mm f90mm

ISO speed: 1600

Exposure: 16 x 300 seconds

DeepSkyStacker settings:

Stacking mode: Standard

Alignment method: Automatic

Lights 16 frames - total exposure: 1 hr 20 mn

RGB Channels Background Calibration: No

Per Channel Background Calibration: No

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Offset: 108 frames exposure: 1/8000 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Dark: 32 frames exposure: 5 mn 0 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Flat: 70 frames exposure: 1 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Post-processing in PixInsight 1.7 and a bit in PhotoShop

I went to Mt Pinos around the peak of the Perseids, however, this was totally my excuse. My main focus was comet 21P, whose brightness has been rising since it's nearing both the Earth and the Sun. The weather was perfect, although we expected that there would be a layer of smoke due to the wildfire before we got there.

The comet appeared obviously brighter than last time I saw it in my 20*80 binoculars. My visual estimate yields m1=7.9, Dia.=7', and DC=4 for the comet. I could also be able to tell its tail of ~0.2 deg in length in P.A. 250 deg.

Images calibrated with bias, dark and flat and coadded in DeepSkyStacker, further processed in Photoshop. Btw I just learnt that I did not have to click on the positions of the comet in each scientific frame, but simply click for the first, the referenced and the last frames, and then the software can interpolate based on the timestamps. Once again IRIS could not remove all the hot pixels, which I guess is because the number of the hot pixels exceed some limit that wouldn't be tweaked by users. The image is 50% resized and cropped. I also attempted to produce an image where both the comet and the field stars are not trailed, however my attempt failed, presumably due to the enormous number of field stars, even though I did try to separate all the images in many groups and applied sigma clipping. It is probably not worth for me to spend more time coping with this, unless in the future there is some code that will specifically and conveniently process cometary images in that manner.

7 exposures of the stars - combined with DeepSkyStacker to show the stars without noise and hot pixels from the sensor.

Trying my new Altair Astro 72ED-R, ASI290MC, Astro Physics CCDT67 0.67 Reducer, UV/IR Cut Filter, 10 x 15-second subs. Stacked in DeepSkyStacker. Finished in Photoshop.

Camera: Nikon D50

Exposure: 1hr (15 x 4m) ISO 800 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: Yes - PHD Guiding

Stacked: DeepSkyStacker

Adjustments: cropped/leveled in Photoshop

Location: Flintstone, GA

noise stack of 106 images.

Canon EOS 6D

Canon 300mm f/4.0 + Canon 1.6x teleconverter

15 seconds @f/5.6 @ISO 1600

Polarie Tracker

DeepSkyStacker

Ioptron Minitower II Pro Alt-az,80mm triplet Apo (f/6) and QHY178M with 0.5x reducer.

20 subs at 10 seconds each stacked in Deepskystacker and processed in Nebulosity 4. Planetary nebula NGC 2438 can be seen towards bottom of cluster.

Image taken morning of 9/01/19

Here is Comet 29P/Schwassmann-Wachmann from December 14, 2022.

Tech Specs: Meade 12” LX-90, Antares Focal Reducer, ZWO AS071 running at -10C, Celestron CGEM-DX mount, ZWO ASIAir Plus, ZWO EAF, 60 x 60 second exposures, darks from the library and flats after the imaging session, DeepSkyStacker and Tycho Tracker. Image Date: December 14, 2022. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

Again, plenty of fainter, likely more distant galaxies surround the main subject.

8 x 4-minute, manually guided exposures at f/4 and ISO 1600. Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; curves adjusted in Canon Photo Professional; noise reduction via Cyberlink PhotoDirector.

Canon 6D

Canon 300mm f/4.0 @ f/4.0

Vixen Polarie tracking head

180 x 20 sec @ISO8000

Stacked in DeepSkyStacker

Processed in Lightroom

Carefully framed picture to get both the horsehead and flame in one shot, taken as part of Stargazing Live from my back garden. Celestron Nexstar C8, Starizona corrector, astromodded canon EOS550D, CLS clipfilter, CG-5 mount guided with Celestron guidescope/SP900C cam and PHD guiding, BackYardEOS image capture. 40 x 120s subs at iso3200, stacked in DeepSkyStacker (without darks - in a hurry). Everything crahsed atleast once - laptop froze, and even the scope controller crashed and lost alignment. Still, it was beautifully clear and dark.

Shotdate: October 2nd 2013

Camera: Nikon D3x

Optics: Nikkor 80-400mm f4.5-5.6 @ 400mm f7.1

Mount: SkyWatcher NEQ6 Pro

Guiding: LVI SmartGuider2 on 500mm APO

Stacking in DeepSkyStacker:

Stacking mode: Standard

Alignment method: Bicubic

Stacking 30 frames (ISO: 1600) - total exposure: 2 hr 30 mn 30 s

RGB Channels Background Calibration: No

Per Channel Background Calibration: Yes

Method: Auto Adaptive Weighted Average (Iterations = 5)

Offset: 108 frames exposure: 1/8000 s

Method: Median Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Dark: 28 frames exposure: 5 mn 0 s

Method: Median

Flat: 42 frames exposure: 1/8 s

Method: Median Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Post-processing in PixInsight 1.7

Equipment

Imaging telescope / lens

Sky-Watcher Newtonian 200/1000 mm

Imaging camera

ZWO Optical ASI1600MM - C (CMOS)

Mount

Equatorial Sky-Watcher AZEQ6

Guiding camera

ZWO Optical ASI120MM (CMOS)

Filters

Optolong H-alpha (Narrowband Hydrogen Alpha) 1.25" 7nm

Optolong SII (Narrowband Sulfur 2) 1.25" 6.5

Optolong OIII (Narrowband Oxigen 3) 1.25" 6.5

Accessories

Coma corrector Baader 2.00"

Processed with

APT (Astro Photography Tool)

DSS (DeepSkyStacker)

PixInsight (Pleiades Astrophoto)

Frames / Subs

Lights (filter H-alpha) 40x120sec

Lights (filter OIII) 40x120 sec

[Note - this is not a new photo. It is a down-rez'd version of another that has been spreading widely on tumblr without my explicit consent. Beware, fellow photo buddies...]

The constellation Cygnus, the North America Nebula, the Milky Way, and the tops of my neighbor's ponderosa pine trees.

This is 2 images combined by DeepSkyStacker, and postprocessed in Gimp to accentuate the region around the NAN at the expense of the rest of the image. This is my first image with DSS, and I am very encouraged by the result. You can even faintly see the Pelican Nebula next to the NAN.

The stars were tracked with my hand-operated barn door tracker, and the exposure was somewhere between 15 seconds and 2 minutes. I was using a hand tape recorder to note the exposure data, but alas nothing is on the tape. I'm guessing 1 minute.

My Barn Door Tracker:

www.flickr.com/photos/41577645@N07/sets/72157624698263492

Shotdate 07-03-2011

Camera: Nikon D3x

Optics: Celestron 9.25" Edge HD

Guiding: LVI AutoGuider 2

Mount: Sky-Watcher HEQ6 Pro

Revisited version: www.flickr.com/photos/14721988@N02/6976343764/in/set-7215...

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Stacked in DeepSkyStacker 3.3.2

19 frames 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 (K = 2.00, Iterations = 5)

Offset: 120 frames exposure: 1/8000 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

Dark: 10 frames exposure: 5 mn 7 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

Flat: 40 frames exposure: 1/4 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

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Processed in PixInsight 1.6

Reworked with histograms, cloned the image and repeated the histogram up to 5 times, and merged as HDR using the HDR function of PI, used some curves and mask to process after that.

Taken with a D600 at 1s 200mm f/2.8 and stacked 20 images with Deep Sky Stacker This is the Orion Nebula that makes up Orion's knee in the constellation. As seen from Deal's Gap on US129 in the Great Smoky Mountains.

64x180sec ISO1600 200mm F2.8 Canon telelens at F4 on Canon 6D full spectrum and Astronomik CLS-CCD filter. Stcked in Deepskystacker and processed in Pixinsight.

An unguided/untracked, short-exposure view of the Great Orion Nebula captured with a series of 1/3-second-long exposures using a Nikon D5100 DSLR and a Nikkor 70-300mm zoom lens. This image reveals some of the complex structure in the core of the nebula including the so-called Trapezium star cluster (theta Orionis). The faintest stars recorded in this image are just below magnitude 12 (as checked with the star charting freeware Cartes du Ciel).

I think this image bears a strong likeness to a drawing made of this nebula in 1774 by Charles Messier. It thus might be considered a guide on how the Orion Nebula will look through a small telescope (I've rotated this image by 180 degrees to better match Messier's drawing, but otherwise it is shown here unreversed/uninverted as it would appear to the naked eye or though a pair of binoculars -- after allowing for any difference in image rotation).

Messier's Drawing of M42 on Wikipedia

My photo is best viewed in the Flickr light box (press the "L" key to toggle the light box or click the following link):

View On Black

Captured on January 2, 2012 between the hours of 11:45PM and 11:59PM PST from a moonlit and significantly light-polluted, near-center-city location using a Nikon D5100 DSLR with a Nikkor AF-S 70-300mm 1:4.5-5.6 G zoom lens set to its 300mm position (ISO 4000, 1/3 second, f/5.6).

Image stack created with DeepSkyStacker using 160 "light" frames (giving approximately 53 seconds of total exposure integration time), 128 "dark" frames, and 64 bias frames. Final adjustments done in Photoshop CS3.

All rights reserved.

Stacked from 10 frames in DeepSkyStacker then processed for color, these plus another 90 were used non-aligned to make a star trails image. I believe each frame was taken around 5 seconds at f/1.4 and ISO 1600 or 2000 for reference. The D800 with the 85mm f/1.4 is just shockingly sharp. I need to figure out how to deal with the vignetting at the corners though as it really makes a difference in the stacking.

A stack of 34x8s exposures with a Olympus PEN Lite E-PL6 camera, 25mm lens and Tide CineSoft Subtle filter.

Using an Omegon MiniTrack LX3 clockwork tracking mount.

Stacked in DeepSkyStacker. Processed in PixInsight, (DynamicBackgroundExtraction, HistogramTransformation, AssistedColorCalibration).

Greetings!

Based on observations made with the European Southern Observatory telescopes obtained from the ESO/ST-ECF Science Archive Facility.

Images: FORS1

Date: 04-07-2008

I use these images

3 HeII => L

3 HeII6500 => L

1 b_High => Blue

1 V_High => Green

1 Halpha => Red

With some bias and Flats, that I stacked using DeepSkystacker.

Second Step was to level the histogram of the up and down frames so they coud match.

Then Photoshop, for Level, LRGB assembly and high pass mask.

I try to mask the missing pixel..

And finalise the work with some Level, and colors fix.

Hope you like it!

Andy

Stacked with DeepSkyStacker. 47 10s Lightframes, 21 Dark and 37 Biasframes.

15x 30s subs ISO1600 stacked in DeepSkyStacker (10 Darks, 20 Flats, 20 Bias) processed in PixInsight and Photoshop. Canon EOS 450D DSLR prime focus Sky-Watcher 150P Newtonian EQ3-2 mount. Baader Neodymium filter, Sky-Watcher coma corrector.