M 35 and NGC 2158

M 35 and NGC 2158 in Gemini

12" ASA - LRGB

Size: 2000 px

© Velimir Popov & Emil Ivanov 2013

Messier 35 (also catalogued as NGC 2168) is an open cluster in the constellation Gemini. Scattered over an area almost the size of the full moon, it is located at about 2,800 light-years from Earth. About 15' southwest of M 35 is located the compact open cluster NGC 2158.The stars of the over 1 billion years old cluster are very highly concentrated, similar to a globular cluster. Therefore previously this star cluster was considered globular cluster, but because of its age, its identification as an open star cluster is indubitable.

Image details:

Annotation

Center of field RA	06:08:20 (h:m:s)
Center of field DE	+24:16:28 (deg:m:s)
Size	1.62 x 1.09 (deg)
Pixel scale:	1.8 (arcsec/pixel)
Orientation:	Up is -85.8 degrees E of N

Charts and image details obtained from Astrometry.net

Optic(s):	ASA 12" Astrograph @ f/3.6 (Newton)
Mount:	ASA DDM85 Standard
Camera:	SBIG STL 11000 M
Filters:	Luminance, Red, Green, Blue, Astronomik filters
Dates/Times:	3.01.2013
Location:	IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details:	R:3x3 min, G:3x3 min, B:3x3 min. Bin 1, Total 27 min.
More details:	Dark and flat frames reduction
Processing:	PixInsight / PS

e-mail: info@irida-observatory.org