AGC 2151 (ACO 2151) Galaxy Cluster in Hercules
Center of field at approximately: RA 16 hours 05 minutes 10 seconds, Dec +17 degrees 42 minutes 43 seconds
Size: 56' Magnitude: 10th brightest 13.8 Class: 2 1 II, # galaxies 87
North is up
West to the right
14.5" f5 Newtonian reflector
ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56
Lumicon Red filter, 670 minutes (67 x 10 minute subs), 07/8/9/10/11/2016; FWHM 2.4-3.9 per CCDStack
CCDStack 2.92.6001.26126, Photoshop CS5.1
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)
This Abell Galaxy Cluster is larger than my imaging field (~17' x 26'),
so I centered on more or less what my software (Megastar v5.0.14)
indicates is the center (16h 05m 12s, +17d 44m 00s). The elliptical
galaxy just above center is NGC 6047.
There are many scientific names for this galaxy cluster (see the CDS listing), but it is also known as the Hercules Galaxy Cluster, Hercules Supercluster, etc. See marked NGC/IC objects.
NGC 6047 from the NGC / IC Project: