The Triangulum Galaxy | M33 - a photo on Flickriver

            I spent Sunday night setting up my scope again, aligning it, and tracking the Triangulum Galaxy. The Triangulum Galaxy lies ~2.7 million light years away from Earth and is part of our local group of galaxies. It lies in the constellation Triangulum, from where it gets its name. Charles Messier cataloged it first in 1764. He published his Catalog of Nebulae and Star Clusters in 1771 and listed it as object number 33, hence the name M33.

Equipment:
SkyWatcher EQ6-R
Nikkor 500mm f/4 P AI-S at f/5.6
Sony a7RIII (unmodified)
ZWO 30mm Guide scope
GPCAM2 Mono Camera

Acquisition:
Taos, NM: my front yard - Bortle 3
28 x 301" for 2 hours, 26 min, and 56 sec exposure time.
3 dark frames
15 flats frames
15 bias frames
Guided

Software:
SharpCap
PHD2
DeepSkyStacker
Photoshop
Lightroom

My Sony a7RIII and adapted Nikkor 500mm f/4 P AI-S were mounted on an ADM vixen rail and secured to the SkyWatcher EQ6-R mount. I polar aligned my mount using SharpCap Pro. The guide scope/camera was attached to the camera's hot shoe. I used PHD2 to autogude during the imaging session. DeepSkyStacker was used to combine all frames, and then I processed the TIFF file in Photoshop. I stretched the 32-bit file and used Gradient XT on the image. I then made it a 16-bit file and continued to stretch the file in levels, then curves. I used the color sampler tool and levels to do my best to help keep colors accurate. I then used my skillset, including some dodging & burning, and relied on Astronomy Tools Action Set and Topaz Denoise to give the image a polished look. I brought it into Lightroom to do final color corrections and add EXIF data.
   

Taken on: November 21, 2022

Tags:

500mm f/4

500mm f/4 P AI-s

Sony ILCE-7RM3

a7riii

astro

astronomy

astrophotography

deep sky object

deep space

deepskystacker

dso

eq6-r

galaxy

german equatorial mount

m33

manual focus

messier 33

mount

nikkor

nikon

nikon 500mm f/4 P AI-s

skywatcher

sony

spiral

triangulum galaxy « less

Sets appears in: • Astronomy and Astrophotography • Nikon 500mm f/4 P AI-S more » • 2022 « less

Groups appears in: • Deep Space Astrophotography • Amateur Astronomy more » • astrometry • Astronomy, Stars, Planets and Space • Manual Focus Lenses • Astronomy for all • Nikon Prime AI-S • Starry Night Astrophotography • Nikkor 500mm AI-P f/4 • Backyard Astrophotography • Old and Manual Focus Lenses • BudgetAstro • Camera Lens Astrophotography • Vintage Primes on Sony A7 • Astrophotography for beginners. • Sony A7R III (ILCE-7RM3) • SONY A7RIII / ILCE-7RM3 GROUP • Sony A7 series with manual Nikkor lenses • Astro Imaging « less

Camera: Sony ILCE-7RM3, f/5.6, 8456 sec, 500mm (more info) (hide info)

Camera:	Sony ILCE-7RM3
Lens:	Nikon 500mm f/4 P AI-S
Aperture:	f/5.6
Exposure Time:	8456
Focal Length:	500mm
Color Space:	sRGB
Software:	Adobe Photoshop Lightroom Classic 11.2 (Macintosh)
Show full info

Stats: 4,625 views / 10 comments

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