Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Rocket Pooch on Mar 14, 2005, 04:59:00

Title: NGC4631
Post by: Rocket Pooch on Mar 14, 2005, 04:59:00
(http://www.jumpers4goalposts.org.uk/images/Astronomy/NGC/caldwell32aa.jpg)


NGC4631 (Best 38, Caldwell 32) is a spiral galaxy located 6.4° SSW of Cor Caroli (alpha Canum Venaticorum), and located in the top, right of the photograph. Dreyer calls it very bright (mag. 9.3), very large (14'x2'), and very elongated (PA 86°). It has a bright, slightly off-center nucleus with a star just north of it. NGC4627 is the small galaxy just 2'-3' to the north. NGC4656 (Best 39) is the other large galaxy to the lower, left. Described as fairly bright (mag. 10.6), large (15'x3'), and very elongated (PA 34°), it, too, has a faint companion to the north (NGC4657) that is partly superimposed.
Title: NGC4631
Post by: Oscar the Cat on Mar 14, 2005, 21:05:00
Very nice Chris, what exposure times & filters were used?
Title: NGC4631
Post by: Rocket Pooch on Mar 14, 2005, 22:04:00
Ha Filter and 40x40seconds SAC8 and Skywatcher 80mmF5.