NGC 7510 (Lund 1030, Cr 454) Open Cluster in Cepheus
Located at: RA 23 hours 11 minutes 04 seconds, Dec +60 degrees 34 minutes 08 seconds
Size: 4.0' (7.0') Magnitude: 7.9 Class: II 3 r n
North is up
West to the right
14.5" f5 Newtonian reflector
ST-8XME, self-guided, binned 1x1, temp -10c, camera control MaxIm DL 4.56
Lumicon Red filter, 230 minutes (23 x 10 minute subs), 09/18/2016; seeing 2.8-4.2 FWHM per CCDStack
CCDStack 2.93.6093.26774, Photoshop CS5.1
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)
I shot this nice open cluster as a one night project, as the prediction was for several nights of cloud cover (monsoonal moisture).
According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 7.0 arc minutes.
From the NGC / IC Project:
Contemporary Visual Observation(s) for NGC 7510
NGC 7510 = Cr 454 = Lund 1030 = OCL-256 23 11 04 +60 34.3 V = 7.9; Size 4 18" (10/9/04): beautifully rich, small cluster with a triangular or wedge-shaded outline. Roughly 50 stars are resolved in a 4'x2' region with additional sprays of stars extending to the SW and NE. There is a well-defined border of brighter stars running SW-NE along the south side of the wedge with the brightest mag 9.6 member at the east end of this string. There are several 11- 12th mag members, but most seem mag 13 and fainter. The north end of the giant HII complex, Sh 2-157, lies ~30' E. 17.5" (10/17/98): very pretty triangular wedge of stars in a 5x2' group. There are brighter stars at the W and E vertex with the brightest star at the following end. Within the triangle are two dozen stars oriented SW-NE including a number of mag 14-15 stars on the eastern side. Just following the main grouping are another 8 or 9 stars which may be part of the cluster. Picked up while viewing nearby Sh2-157. 13" (9/9/83): striking at 62x, about two dozen stars in a wedge-shape elongated SW-NE. Compact cluster Mrk 50 and HII region LBN 11 is ~30' ESE. - by Steve Gottlieb