NGC4939 is a fine SA(s)bc-typed and 5,5′ × 3,0′ sized galaxy of apparent magnitude 11,5mag.It is located 134 mio.light years away in the constellation of Virgo.
Its point-like center reveals NGC4939 to be a Seyfert type II galaxy with a very active nucleus.
Lately 4 supernova events could be observed in NGC1739: SN 1968X, SN 1973J, SN 2008aw (Typ-II) und SN 2014B (Typ-IIP).
William Herschel dicovered NGC4939 in 1786.
position (epoch 2000):
Ra.: 13h 04m 14,4s
Decl.: -10° 20′ 23″
LRGB (540-140-140-140 min),a total of 16.0 hours
80cm f/7 AstroOptik Keller corrected cassegrain
FLI Proline 16803 Astrodon LRGB Gen-II filters
Prompt 7 CTIO/UNC Chile,remote controlled
image processing: Bernd Flach-Wilken
here you can see NGC4939 in a 21´arc-min.wide squared field in Virgo
For getting full resolution click HERE
here is a higher magnificated version of the photo above: