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.

⇒ This wide-field image was taken with a telephoto lens set to 147 mm focal length on a motorized equatorial mount.

⇒ The total exposure time is 40 minutes, composed of a superposition of 20 pictures 120 seconds using the #DeepSkyStacker software.

⇒ This area of the sky is rich in nebulae. Besides, in this picture we can see (click on the high resolution image):

-> The famous Orion Nebula (M42) on the top left with its neighbor NGC 1973

-> Nebula Horse Head (IC 434)

-> Flame Nebula (NGC 2024)

-> Nebula M78

Technical details:

20 x 120 secs exposure time

F / 6.3 aperture

ISO 1600

147 mm focal length

Canon EOS 600D + Tamron 70-300 lens

Light enhancement with Lightroom software.

How do you find it ?

*********************/ French Translation \**************

Voyage dans le complexe d'Orion [Astrophotographie]

⇒ Cette image grand champ a été prise avec un téléobjectif réglé à 147 mm de focale sur une monture équatoriale motorisée.

⇒ Le temps d'exposition total est de 40 minutes mais il a été décomposée en une superposition de 20 photos de 120 secondes à l'aide du logiciel #DeepSkyStacker .

⇒ Cette région du ciel est très riche en nébuleuses. D'ailleurs, sur cette image nous pouvons voir (cliquez sur l'image haute résolution) :

--> la célèbre nébuleuse d'Orion (M42) en haut à gauche avec sa voisine NGC 1973

--> la nébuleuse de la tête de cheval (IC 434)

--> la nébuleuse de la flamme (NGC 2024)

--> la nébuleuse M78

Détails techniques :

20 x 120 secs d'exposition

F/6.3 d'ouverture

ISO 1600

147 mm de focale

Canon EOS 600D

Imaged from a local beach, which has a less obstructed and slightly less light-polluted view compared to my back garden.

14 x 2-minute exposures at f/4 and ISO 3200. Astro-modified Canon EOS 600D and Leica Summicron 50mm f/2 lens on a Vixen Polarie star tracker.

Frames stacked in DeepSkyStacker software; curves and colour balance adjusted in Canon Photo Professional; noise reduced using Cyberlink PhotoDirector.

WilliamOptics Star71 + QHY16200A(-0C) 4x300sec

FSQ106ED + QE0.73X + EOS6D(SEO-SP4) 5x300sec (Ambient +27C) ISO1600

on SkyWatcher AZ-EQ6GT

(Total:45min)

Guiding: OAG9 + OrionSSAG

RAP2, DeepSkyStacker, StellaImage7, Photoshop CC2015

Locations: Kamogawa Sports Park, Kibichuocho, Okayama, Japan

Jul. 2016

Comet C/2023 A3 (Tsuchinshan–ATLAS), photographed at 500mm f/4, 27 frames stacked uusing DeepSkyStacker. The 'anti-tail' can just be seen at lower right of frame. Frames exposed 1 sec at f/4, ISO 1600.

From the Eagle and Omega nebulae at left, via Trifid and Lagoon to NGC6357 (Madokami?) and Cat's Paw Nebulae. The upper right corner of this image was at only 11 degrees above the horizon here in Portugal. This is the B panel used for a mosaic. Primalucelab Canon 700Da Cooled to -10 C with CanonSmall 40mm pancake lens (f2.8 @ f4.0) 61x60sec iso1600 40mm f4 30D 20F 140B. Stacked in DeepSkyStacker and processed with Pixinsight.

Knight Observatory, Tomar

Located 6,500 light years away in the constellation of Taurus. This spectacular planetary nebula is what's left of a star that Chinese astronomers witnessed going supernova in the year 1054, reported to have been visible in the daytime for up to 4 weeks!

First discovered by John Bevis in 1731 and then later by Charles Messier, who mistook it for Halley's comet. Leading him to create a list of objects that weren't comets, so he wouldn't be wasting his time on them. This list is known today as the Messier catalogue.

Data was captured at The Astronomy Centre, Todmorden, UK on 10th of November 2023.

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 gain 100, Optolong L'enhance 2" filter, ZWO asiair plus.

Darks, Flats & Bias.

Stacked with DeepSkyStacker and processed in PixInsight & Affinity Photo.

Messier 20 and Messier 8 (and Saturn)

Geeky info:

Nikon D800 with 300mm F4 lens

iso 3200

eq 3-2 mount

no filter, no guiding

Total exposure time: 50 minutes

Bortle 4

During my wide field imaging session on March 29, 2016 of the Messier pair M108 (Surfboard Galaxy) and M97 (Owl Nebula), I also caught a view of NGC 3631 in the lower right corner of the view. After zooming in on the galaxy, I noticed a bright star in one of the spiral arms, further investigation showed that this was, in fact, a supernova, SN2016bau, discovered on March 3, 2016 by Ron Arbour.

The wide field unprocessed image (available to view on my blog) shows the stacked, full frame, 10-minute exposure using a Canon 6D and Canon EF 400mm f/5.6L USM lens mounted on an iOptron ZEQ25 mount. 10 x 60 seconds at ISO 3200, stacked in DeepSkyStacker and further processed in Adobe Lightroom and ImagesPlus.

The clipped, zoomed and enlarged image is from the full frame view. I used a reference image of galaxy NGC 3631 from the Sloan Digital Sky Survey to show the galaxy without the supernova. The spiral galaxy is about 50 million light year away.

BLOG: www.leisurelyscientist.com/?p=1727

A tricky one to image, as it is very low in the sky from the UK.

13 x 1-minute unguided exposures at ISO 3200, 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.

Messier 92 (also known as M92, M 92, or NGC 6341) is a globular cluster of stars in the northern constellation of Hercules. Located 27,000 light-years from Earth in the constellation Hercules, this globular cluster was first discovered by the German astronomer Johann Elert Bode in 1777. With an apparent magnitude of 6.3, M92 is one of the brightest globular clusters in the Milky Way and is visible to the naked eye under good observing conditions. It can be most easily spotted during the month of July. The cluster is very tightly packed with stars, containing roughly 330,000 stars in total. (REF: science.nasa.gov/mission/hubble/science/explore-the-night...)

Tech Specs: Orion 8” RC Telescope, ZWO ASI2600MC camera running at 0F, 115 x 60 second exposures, Celestron CGEM-DX pier mounted, ZWO EAF and ASIAir Pro, processed in DeepSkyStacker and PixInsight software. Image Date: May 2, 2024. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

- www.kevin-palmer.com - It was my first time testing out a Nikon 50mm f1.4 Nikkor AF-D lens that I recently bought. This image is a stack of 15 6-minute exposures (90 minutes total) along with 5 dark and bias frames. An iOptron Skytracker was used to track the stars.

The Cygnus region of the milky way contains many colorful nebulae, star clusters, and clouds of interstellar dust. When there are this many stars it's always hard to pick out the constellations, so I drew in the lines myself. Deneb is the bright star on the upper right near the North America nebula.

37 x 120 seconds for a total of 74 minutes of data.

Shot with Sony a7RIII and Nikon 105mm f/2.5 at f/4. Camera piggybacked on a Celestron optical tube and CGEM mount that was polar aligned. No autoguidng was used.

Stacked with DeepSkyStacker and processed with Photoshop. I'm still learning a lot about astrophotography. It sure is fun though.

Manually, off-axis guided for 7 x 4-minute exposures at ISO 1600, f/4.

Modified EOS 600D & Revelation 12" Newtonian reflector telescope. The halo and spikes around the bright star at lower right are imaging artefacts.

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.

www.DonegalSkies.com

Location: Killygordon, Co. Donegal, Ireland.

Time: 22:00 - 00:00

Date: 21 Sep 2012

Target: Andromeda Galaxy

Exposures: 8 x Five minute exposures (12Darks) Flats

Equipment:

Mount- Celestron CG5-GT (unguided)

Camera- Self-modified Canon 1000D

Telescope- Celestron Oynx 80ED

Additional- Astronomik cls clip LP filter.

Stacking & Processing: DeepSkyStacker & Photoshop CS5

NGC 2841 is an unbarred spiral galaxy in the northern constellation of Ursa Major. J. L. E. Dreyer, the author of the New General Catalog, described it as, "very bright, large, very much extended 151°, very suddenly much brighter middle equal to 10th magnitude star". Initially thought to be about 30 million light-years distant, a 2001 Hubble Space Telescope survey of the galaxy's Cepheid variables determined its distance to be approximately 46 million light-years. (Wikipedia)

Observation data (J2000 epoch)

Constellation: Ursa Major

Right ascension: 09h 22m 02.655s

Declination: +50° 58′ 35.32″

Distance: 46.0 ± 4.9 Mly

Apparent magnitude (V): 10.1

Tech Specs: Orion 8” RC Telescope, ZWO ASI2600MC camera running at -10F, 355 x 60 seconds (5 hours and 55 minutes), Celestron CGEM-DX pier mounted, 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).

This is ye olde Andromeda Galaxy -- nearest large galaxy to the Milky Way (approx 2.5 million ly away). It's apparently similar to ours in size and structure. M31 is so bright that it can be seen with the naked eye from dark skies, and I regularly catch it through binoculars even from downtown Toronto. It's so huge that it doesn't fit in the field of view of my CCD! Andromeda also has a couple of companion galaxies -- M32 is the small one in the upper portion of the frame, and M110 is peeking into the frame at lower left.

This was my first stab at LRGB using the QHY9 as panchromatic Luminance (with IDAS light pollution filter) and an old DSLR image from my Canon as RGB. I'm not thrilled with the colour balance, but the LRGB detail enhancement worked out pretty well.

Forgot to use the FLT field flattener on this one.

12x10 minute frames of luminance with the QHY9 cooled @ -25degC, 18x5min frames of RGB colour with the old Canon 350D. Stacked in DeepSkyStacker, processed in PS CS2.

Canon 60D

14mm Samyang at f/2.8

30 seconds at ISO 800

This is a stack of five frames for the sky and around thirty frames for the ground and sea. The slight green tint above the orange horizon is airglow, caused by various processes in the upper atmosphere.

The Exif data is wrong because the lens doesn't communicate with the camera.

When I first got into astrophotography, galaxies were what I was most interested in imaging. I quickly realized that to image most galaxies well (except for the few large ones like M31 and M33), I needed a long focal length lens and accompanying highly accurate tracking. My budget didn't allow for that, so I adjusted my aspirations and focused on widefield shots with a simple tracker. Still, I love a good galaxy picture and anticipate stepping up to more sophisticated equipment someday.

I turned my back on Orion last night (it was difficult) and shot north again for the first time in awhile. I didn't have high expectations for what I'd get from imaging Galaxy IC 342 with a 135mm lens. I'm guessing somebody has tried it, but I couldn't find any examples online.

I'm happier than anticipated with this image. Although small, there is a good variety of objects in this extent; in addition to IC 342, it contains 1) the yellow reflection nebula around star BE Camelopardalis in the center, 2) a dark nebula on the left (I think IREC 193), 3) star cluster NGC 1502 in the upper left, and 4) the asterism Kemble's Cascade below NGC 1502 (although it's difficult to distinguish among the surrounding smaller stars).

Here's a thorough report about the reflection nebula around star BE Cam that clued me into its existence: www.sternwarte-baerenstein.de/upload/be-cam_reflection_ne.... Also an excellent APOD of IC 342: apod.nasa.gov/apod/ap170708.html

I'm looking forward to doing some more widefield galaxy shots this spring.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 56 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken on Feb. 19, 2020 under Bortle 3/4 skies. I've cropped it but not extensively.

1h40m (10x10min); 280mm lens @ f/5.6. astronomik 6nm H-a filter. modified 50d (astrodon luminance filter)

need more time...

The North America Nebula (NGC 7000) is an emission nebula in the constellation Cygnus close to the star Deneb. You can tell by the image where the name came from. The distance to this nebula is estimated to be about 1,600 light-years.

The name “North America Nebula” was coined by Dr. Max Wolf (ref: Burnham’s Celestial Handbook, Volume 2, by Robert Burnham Jr.) no doubt from his work with E.E. Barnard on dark nebulae.

Tech Specs: Canon 6D camera, Canon EF70-200mm f/2.8L USM lens, iOptron SkyTracker. 13-minutes total exposure, 60-second subs, ISO 1600, f/2.8, 200mm. Stacked in DeepSkyStacker and processed in Lightroom. Imaging date: August 4, 2016.

First clear moonless night since 18 September - I feel so blessed! :)

I use the term "clear" in its loosest possible sense, as it was Guy Fawkes Night here and the smoke from bonfires and fireworks certainly didn't assist much (why do we celebrate someone NOT blowing up Parliament?!). Given the conditions, I'm quite pleased with this, but I'll give it more time if we get another clear night before it disappears :)

Always looks like a galaxy that's just got out of bed and needs combing to me :)

SW ED80/EQ5

Nikon D70 modded, Baader Neodymium filter

79 x 180secs iso 800 (just short of 4 hours)

Guiding (RA only): Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS and processed in CS5

Here is a view of Comet C/2017 T2 (PANSTARRS) from April 8, 2020. This is a 29-minute stacked exposure showing the comet as it is traveling through the constellation Cassiopeia.

Technical Specs: Meade 12” LX-90, ZWO ASI071mc-Pro, 29 x 60 second exposures, Gain 200, Temp -5C, guided using a ZWO ASI290MC and Orion 60mm guide scope. Captured using SGP v3.1 and processed in DeepSkyStacker. Image date: April 8, 2020. Location: The Dark Side Observatory, Weatherly, PA, USA.

BLOG: darksideobservatory.com

This is a two pane mosaic stretching from Libra to Sagittarius, captured from Barronal beach in Cabo de Gata, Spain. The bright yellow/gold 'star' on the right is Saturn in all it's glory.

I've always loved this area of the sky, it has almost anything you care to name. In this image you can see emission nebula, reflection nebula, dark nebula, globular clusters, open clusters, millions of individual stars, a planet, and a section of our home galaxy!

Canon 60Da

35mm Samyang at f/2.8

Astronomik CLS EOS Clip Filter

AstroTrac TT320X-AG (no guiding)

45x 120 second exposures per pane

Integration time: 90 minutes per pane

ISO 1600

Stacked in Deep Sky Stacker, stitched in Microsoft ICE and processed in Photoshop. Taken in Cabo de Gata National Park in Spain, May 2014.

Per pane:

35x 120s lights

35 darks

35 flats

35 dark flats

35 bias frames

Objects visible in the image:

M4 (NGC 6121), M20 (NGC 6514), M8 (NGC 6523), M21 (NGC 6531), M17 (NGC 6618), M16 (NGC 6611), M23 (NGC 6494), M25 (IC 4725), NGC 6604

This is a shot I'd like to redo with about four times the exposure time...DeepSkyStacker: 105 mm, f/2.8, 1 min 29 sec, 56 frames, 12800

Acquisition details:

OTA: Celestron 10" f/4.7 newtonian reflector, C10N

Filter: Astronomic CLS EOS-clip filter

Corrector: MPCC

Mount: Celestron CGEM DX

Camera: Canon 450d mod BCF, 70°F

Exposure: 63x2min ISO 1600

Guided with PHD, SSAG, Orion 50mm guide scope

Captured with BackyardEOS

Registered and stacked with DeepSkyStacker

Photographed from Round Rock TX (Orange zone)

I decided to have a go at shooting Andromeda without any tracking device after watching Forrest Tanaka youtube tutorial.

www.youtube.com/watch?v=e0JSTF8SGi4

Camera Nikon D7100

Lens Nikon AFS 300mm F4

400 Frames x 1.3s F4 ISO 6400

50 Dark Frames x 1.3s F4 ISO 6400

20 Bias Frames x 1/8000s F4 ISO 6400

Stacked in Deepskystacker

Processed in Photoshop.

Haven't been around these parts for a while :) I see Flickr has changed yet again!

This is my 2014 version of M13, and is considerably better than the out of focus effort I did last year, albeit with only half the time. The faint stuff around the edges is difficult under my skies, so I have to settle for "nearly..." :)

SW ED80/EQ5

Canon 500D modded, Baader Neodymium filter

104 x 180 sec subs, iso 1600

Acquisition: APT

Guiding: Quickcam Pro4000/9x50 finderscope, PHD/EQMOD/AstroEQ

Stacked in DSS and processed in CS5.

I went back out for a third time this week to re-attempt an equatorial alignment, bearing in mind some lessons learned and settling for a shorter camera lens focal length rather than the full 1350 mm of the telescope, but still struggled with tracking errors. Not really sure what I'm doing wrong, maybe the equipment I have just isn't up to the task. I shot this with 90-second exposures, at 180 mm, and recorded 30 frames, but only 10 proved usable. The rest had varying amounts of trailing, and even most of the 10 had a small amount. Longer exposures were faring even worse. Bit annoyed to only get 15 mintues of data from 45 mintues of recording, but with some enthusiastic processing in DeepSkyStacker and Lightroom, I managed to make something of it anyway! Thanks to the extra-dark West Texas skies and the tracking mount I was finally able to get a half-decent image of the Heart and Soul Nebula(e). This was 10 frames at 90 seconds, f/3.5, 180 mm, ISO 2000.

Thought I'd take the opportunity to capture the comet, currently in Andromeda, again. The sky was less murky than last night, but it's likely to be the last clear night for a while.

22 x 30-sec exposures at f/4 and ISO 3200 with an 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, with curves adjustment and further noise reduction in post-processing. Also Starnet++ software used to temporarily separate the stars and comet and prevent the stars bloating when comet contrast is stretched; this has revealed more of the tail that would otherwise be lost in the star background.

I've labelled the more obvious galaxies here but there are many fainter, more distant ones.

33 x 1-minute exposures, ISO 6400, f/4. Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Frames registered and stacked in DeepSkyStacker software; curves adjusted in Canon Photo Professional; noise reduction in CyberLink PhotoDirector.

M8 The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud in the constellation Sagittarius. The Lagoon Nebula was discovered by Giovanni Hodierna before 1654 and is one of only two star-forming nebulae faintly visible to the eye from mid-northern latitudes. Seen with binoculars, it appears as a distinct oval cloudlike patch with a definite core. Within the nebula is the open cluster NGC 6530

22 subs 5 min - 0 gain offset 50 -15*c

C-11 Hyperstar F/2 ZWO2600MC Pro

AP1100gto - unguided.

N.I.N.A beta capture - DeepSkyStacker.

M81 and M82 are a pair of galaxies in the constellation Ursa Major. They are located approximately 10 degrees northwest of the Big Dipper's pointer star Dubhe (Alpha Ursae Majoris) and 12 million light-years away from our Solar System. The distance between them is 150000 light years. They are the largest members of the M81 Group, a physical association of 34 galaxies. M81 and M82 are best observed during the spring.

M81 is one of the more celebrated celestial objects in the Messier Catalog. It is known as the Bode's Galaxy and designated also as NGC 3031. It is a spiral galaxy with an apparent visual magnitude of 6.9 and an angular diameter 21x10 arc-minutes. Its diameter is 92000 light years (about half the size of the Milky Way) while its estimated mass is 50 billion solar masses. At the center of M81 lies a 70 million solar masses black hole.

M82, the Cigar Galaxy, is designated also as NGC 3034. It has a distorted and irregular disk due to the gravitational interaction with M81. It is a starburst galaxy, thus it hosts intense star-forming activity. Its apparent visual magnitude is 8.4 and its diameter approximately 37000 light years. Like most galaxies it hosts at its center a supermassive black hole with a mass of approximately 30 million solar masses.

Camera: Canon 350Da (Baader modified) with Hutech IDAS LPS

Telescope: Celestron C8 SCT, with focal reducer (f/6.3)

Mount: Takahashi EM200 Temma Jr

Autoguiding: Toucam 740K, PHD Guiding

Total exposure time: 27min

Exposures in detail:

7 x 180 sec , ISO 1600

1 x 150 sec , ISO 1600

1 x 120 sec , ISO 1600

1 x 90 sec , ISO 1600

2010-03-20

Alignment and stacking: DeepSkyStacker (no dark neither bias frames were used)

Final post-processing: Photoshop CS3

With the tracking mount I now have I was able to go a little crazy with Orion. I did a similar composition before, but on a fixed mount, limited to 1.6 s per exposure. This was 20 seconds per exposure (ISO 3200), with 70 exposures for 23 mintues and 20 seconds of total integration time. This means I was able to bring out much more bightness and detail in the horsehead region, plus render some of the darker clounds in the extended Orion Nebula. Also shot at a longer focal length (300 mm) on a bigger sensor with less crop, yielding a healthy 18 MP. While this was still in alt/az tracking mode, limiting the exposure time somewhat, this is actually a pretty good subject for that circumstance because the center of the Orion Nebula is already clipped at 20 s. Shot on a Nikon Z6III, stacked with DeepSkyStacker.

- www.kevin-palmer.com -

Comet Lovejoy (C/2014 Q2) moves through the constellation Taurus. First found last August, this comet is the 5th discovered by amateur astronomer Terry Lovejoy. Shining at about 4th magnitude, the comet is bright enough to be seen with the naked eye, and looks even better in binoculars. The comet is currently 50 million miles away from earth, and it's approaching the sun for perihelion on January 30th. Once it leaves our solar system it will not return again for another 8000 years. In the nights ahead Comet Lovejoy will be approaching Pleiades, the bright blue cluster of stars.

This picture is a stack of 21 4-minute exposures with a 50mm lens shot at f/3.5, ISO 1000. An iOptron Skytracker was used to track the stars.

The Crescent Nebula or Supernova Remnant NGC6888 using the ASi183mm. This is a false color narrowband image meant to mimic what the nebulae would look like in the visible spectrum. H-alpha is assigned to the Red channel, Oiii to the Blue, and 75% Oiii, 25% Ha for the Green Channel.

24X600"Ha, 24X600"OIII

Equipment used:

Stellarvue SVR90T at 504mm, ASi183mm camera, AP900 mount, DeepSkyStacker, PixInsight star alignment, Photoshop levels, curves, blending, guided with ZWO174mm and Canon 200mm.

Il mio primo tentativo nel campo dell'astrofotografia: ritratta la Galassia di Andromeda con le altre due galassie ellittiche vicine, M32 e M110.

Cielo con molto inquinamento luminoso e galassia lontana dallo zenit: tra qualche settimana riproverò in condizioni più favorevoli.

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

-16 Settembre 2011 ore 23 circa.

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Piccola curiosità: la distanza che ci separa dalla Galassia di Andromeda è di circa 2 milioni e 400mila anni luce. Quindi la luce che ho catturato con una moderna macchina fotografica è partita da Andromeda quando l'uomo sulla Terra non esisteva ancora, ma erano presenti solo alcune colonie di ominidi nel cuore dell'Africa. ;)

I might have overprocessed this one - the data was so nice. Bortle 2 skies make for easy processing.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 70 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken Mar. 18, 2020 from Bortle 2 skies.

Oltre alla galassia "girandola" M101, , ben visibile un po' decentrata in alto a sinistra, si possono osservare numerose altre galassie (evidenziate con delle note). La più evidente di queste è la NGC5474 poco a sinistra della M101

Canon 6D

Sigma 120-400 @400mm

f 5.6

ISO 1000 e 1250

25 frames x 90 seconds

30 frames x 60 seconds

total exposure about 105 minutes

15+15 darks

25 bias

15+15 flats

Through gaps in the cloud tonight I managed 27 subs of this. Never done it before so thought I should. Not much to say about it really, being a cluster (or two), but here's a bit from wiki: The Double Cluster is the common name for the "naked-eye" (huh!) open clusters NGC 869 and NGC 884, which are close together in the constellation Perseus. NGC 869 and NGC 884 both lie at a distance of 7500 light years.There are more than 300 blue-white super-giant stars in each of the clusters (but not in my picture!)

SW ED80/EQ5

Canon 500D modded, Baader Neodymium filter

27 x 180 sec subs, iso 800, total 1 hour 21 minutes

Acquisition: APT

Guiding: Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS and processed in CS5.

I had some time last evening to collect data on the Fireworks Galaxy (NGC 6946) knowing that there was a recent supernova discovered in it, actually back in May of this year. I had the opportunity of collecting data on this galaxy in the past (2015) so I was able to compare the views and see the supernova (see pic) using my own data.

The bottom photo clearly shows the supernova with a distinctive reddish hue.

Tech Specs: Meade 12” LX90 + Antares Focal Reducer +Canon 6D, guided using a Canon 400mm lens and ASI290MC ZWO camera. 24 x 60 second subs at ISO 1600, 3 x 60 second darks and 3 x 1/4000 second bias. Date: September 10, 2017 Location: The Dark Side Observatory, Weatherly, PA.

I've never used drizzle in DSS before, but I thought I'd give it a crack on this as the galaxies are so tiny. Seems to have yielded some improvement, particularly in M66 - the more interesting of the trio.

Original here for comparison :)

SW ED80/EQ5

Nikon D70 modded, Baader Neodymium filter

84 x 180sec subs, iso 800, for a total of 4 hours 10 minutes

Guiding (RA only): Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS (2 x drizzle) and processed in CS5. Spikes by StarSpikes Pro

A guided image of the spiral galaxy NGC 2403 in Camelopardalis taken last in Monticello with a ZWOASI183 Pro camera attached to an Explore Scientific 102ED refracting telescope with a .8 focal reducer. 40 three minute exposures were stacked with DeepSkyStacker and processed with Adobe Lightroom and Topaz AI.

A globular cluster of approximately half a million stars located 34,000 light years away in the constellation Canes Venatici.

Total exposure time: 31 mins

Telescope: Tele Vue-60 APO refractor

Mount: Vixen Super Polaris

10 x 8-minutes at ISO 1600, f7.5.

The third time I've posted images of this field on Flickr, but this is new data gathered using an EOS 600D modded for astrophotography. I was pleased with the result, although there are 3 flaws:

1. One frame had a diagonal streak, caused I think by a washing line just in front of the scope! You can just see it in the final result. I could have left the frame out of the stack, but I liked the effect!

2. There is a red disk around bright stars (over-exposed on Alnitak), due to out-of-focus infra-red. I've now ordered an IR-cut filter to prevent this.

3. Alnitak has flared over the frame even more than normal - this only affected some frames and I've not got to the bottom of that. I've tried to tone the effect down in the final image.

The exposures were manually, off-axis guided. Sub-exposures registered and stacked using DeepSkyStacker; processed using Canon Photo Professional and Noel Carboni's tools in Abobe Photoshop Elements.

Meade 127mm ED telescope & modded EOS 600D.

Stack out of 7 Pictures with DeepSkyStacker. "Polished" in Photoshop and Lightroom. via 500px ift.tt/2aOdpqs

This is my first attempt at some serious astrophotography. I shot this at Martin's Lookout at Springwood, NSW.

Sony A7 + Canon 16-35mm f/2.8 II L

- 30 x 20s light frames @ f/2.8 24mm ISO3200

- 30 x 20s dark frames

Stacked in DeepSkyStacker with some touches to sharpness, saturation and contrast in Lightroom and Photoshop.

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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 8x10min, Oiii 10x10min, synthetic green

Mount: CEM70G

Captured with SGP

Registered and stacked with DeepSkyStacker

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

Had a go at the bottom section of NGC7000 using my 10" f/4 Newtonian and Atik 314L/SX flterwheel with Narrowband filters. 4 subs at 5min for Ha,5 subs at 5min for SII and 6 subs at 5min for OIII. Each set stacked in Deepskystacker and colour combined (hubble palette) in Maxim dl 4,processed in Photoshop. Autoguided using SX OAG attached to filterwheel and Lodestar with PHD2. Image taken 12/10/15

Total exposure time: 123 mins

Telescope: Tele Vue-60 APO refractor

Mount: Vixen Super Polaris