|NGCs 6928 and 6930: Galaxy Pair (Delphinus) RA: 20h 32.9m / DEC: +09° 52'.3|
Instrument: 10-inch Starfinder
This galaxy pair is located in Delphinus, the Dolphin, about 1.5 degrees south of 4.0 magnitude Epsilon (2) Delphini. NGC 6928 is centered in the sketch at left, which renders a 190X view in my 10-inch Starfinder Newtonian. The galaxy is oriented along an east-west line and covers a 90"x30" area. A 12th magnitude GSC star is due east. NGC 6930 stands 3'.7 to the southeast, 45"x15" in size and shows a faint stellaring at the core. The trio of brighter stars along the northwest boundary of the eyepiece field range from 8th magnitude to 12th magnitude. While in the area, check out NGC 6934 about 2.5 degrees to the south.
|Instrument: 18-inch Obsession|
The view improves considerably in the 18-inch Obsession at a magnification of 173X (12-mm Nagler Type 4). NGC 6928 covers a full 2'x0'.5 area, appearing very much like an edge-on galaxy. A 14th magnitude GSC star marks the northern edge. NGC 6930 emerges as elongated north-south and covering a 1'x0.'4 patch of sky. Its location is marked by a triangular asterism of three 10th and 11th magnitude stars. The ultimate prize, however, is a third galaxy. NGC 6927 appears as a 30" diameter faint smudge some 3' west of NGC 6928. This 14.5 magnitude metropolis is best detected with averted vision.
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Revised: October 4, 2005 [WDF]