Galaxies

NGC 4490

NGC 4490, also known as the Cocoon Galaxy, is a barred spiral galaxy in the constellation Canes Venatici. It lies at a distance of 25 million light years from Earth. It interacts with its smaller companion NGC 4485 and as a result is a starburst galaxy.

NGC 4490 is located 3/4° northwest of beta Canum Venaticorum and with apparent visual magnitude 9.8, can be observed with 15x100 binoculars. It is a member of Herschel 400 Catalogue. It belongs in Canes Venatici galaxy cloud II.

It was discovered by William Herschel in 1788. Two supernovae have been observed in NGC 4490, SN 1982F, and type II-P SN 2008ax, with peak magnitude 16.1.

NGC 4490

M 85

Messier 85 (also known as M85 or NGC 4382 or PGC 40515 or ISD 0135852) is a lenticular galaxy, or elliptical galaxy for other authors, in the Coma Berenices constellation. It is 60 million light-years away, and it is estimated to be 125,000 light-years across.

It was discovered by Pierre Méchain in 1781.

While indirect methods imply that Messier 85 should contain a central supermassive black hole of around 100 million solar masses, velocity dispersion observations imply that the galaxy may entirely lack a central massive black hole.

L = 14 * 1800 sec. bin1, R = 8 * 600 sec. bin2, G = 8 * 690 sec. bin2, B = 8 * 780 sec. bin2.

Total exposition - 11.6 hours.

Pixinsight 1.8 and Photoshop.

M 85

NGC 5395 & NGC 5394

NGC5395 also known as Arp84 the Heron Galaxy is approximately 162 million light years away. NGC5394 is an interacting galaxy, believed to have cartwheeled through NGC 5395. This is a rather small galaxy at 2.7 x 1.3 arcmin.

L = 12 * 1800 sec. bin1, R = 10 * 1000 сек. bin2, G = 10 * 1100 сек. bin2, B = 10 * 1200 сек. bin2, Ha = 12 * 1800 сек. bin2.

Total exposition - 21.2 hours

Pixinsight 1.8 and Photoshop.

NGC 5395 & NGC 5394

M 96

Messier 96 (also known as M96 or NGC 3368) is an intermediate spiral galaxy about 35 million light-years away in the constellation Leo(the Lion). It was discovered by French astronomer Pierre Méchain on March 20, 1781. After communicating his finding, French astronomer Charles Messier confirmed the finding four days later and added it to his catalogue of nebulous objects.

Messier 96 is about the same mass and size as the Milky Way. Messier 96 is a very asymmetric galaxy; its dust and gas are unevenly spread throughout its weak spiral arms, and its core is not exactly at the galactic center. Its arms are also asymmetrical, thought to have been influenced by the gravitational pull of other galaxies within the same group as Messier 96.

L = 12 * 1800 sec. bin1, RGB = 10 * 1200 sec. bin2, Ha = 12 * 1800 sec. bin2, OIII = 11 * 1800 sec. bin2.

Total exposition - 27.5 hours.

Pixinsight 1.8, Photoshop.

M 96