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Created using the Fractal Science Kit fractal generator. See www.fractalsciencekit.com/ for details.
The Leo Triplet consists of three galaxies in a small region of the Leo (the Lion) constellation; they form in fact a galactic group and just not appear close by because of being in the same line of site. It includes: NGC 3628 (aka Sarah’s Galaxy), left, which is an unbarred spiral galaxy that is edge on from our line of site, it is approximately 35 million light years distance with a magnitude of 10.4 and an angular size of 13 arcminutes (I wonder why Messier left it out of his catalog as the other two closed by galaxies are within the same magnitude, maybe it was outside his FOV and missed it while scanning the sky; it was later on discovered by Herschel.) M65 (NGC 3626), top right, is an intermediate spiral galaxy also 35 million ly distant with a magnitude of 10.25 and an angular size of 9 arcminutes. M66 (NGC 3627) also an intermediate spiral galaxy with a magnitude of 9.7and 36 million ly distant and an angular size of 9.1 arcminutes; it is the brightest in the group. The bright star top center is HIP55262, a main sequence star with an apparent magnitude of 7.09. What appear to be small stars are in fact more distant galaxies and if one looks closely one can see little smudges that are intermediate spiral galaxies. North is left.
Taken at Lee, IL on 20150423 at 2300
Image Type: LRGB
L 9 x 300 1x1
RGB 6 x 300 2x2
Hardware:
AstroTech RC 8” with 0.8 reducer/flattener
Orion 400m Short Tube piggy back for guiding
Orion Star-Shooter Auto-guider
QHY9M with filter wheel with Astrodom filters
Software:
EQMOD with Starry Night Pro 7
Nebulosity 3.0.2
CCD Stack
Photoshop CS3
Conditions:
Cold night with good conditions and average transparency. Low temp 31F.
Not my best shot, but a must after my last post, where I wrote that star trails are caused by earth rotation (angular motion).
Of course any rotation of the camera will lead to circular star trails. You can therefore also rotate your mount to achieve the effect. That's what happened here when I initiated a turn with my flying mount.
You can see the turning path in the cloud cover below, while the roll caused the star trails.
EXIF
Canon EOS 6D astro modified
Samyang 24mm f/1.4
Mount: Boeing 777-300ER
10s @ ISO6400 f/2
Details of the decorative incised patterns on walls of 'Tapestry', an apartment block in King's Cross, London. The building was designed by Níall McLaughlin Architects.
Olympus Trip 35
Fujifilm Superia 100 (expired 2008)
Lab developed.
Home scanned and converted with Negative Lab Pro.