NGC 7762 (Cr 457) Open Cluster in Cepheus

Located at: RA 23 hours 49 minutes 54 seconds, Dec +68 degrees 01 minutes 00 seconds

Size: 11' (15') Magnitude: 10.0 visual Class: II 2 m

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 210 minutes  (21 x 10 minute subs), 08/25/2014; seeing 2.3-3.2 FWHM per CCDStack

Processing:

CCDStack 2.81.5337.19441, Photoshop CS5.1

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes: I imaged this open cluster for one night, when this was the only part of the sky (northeast) that was not cloudy ... In this limited exposure, the faint background nebulosity of the NGC 7822 / Ced 214 region is faintly shown. See this color image of the area by Matt BenDaniel. NGC 7762 can be seen as the large open cluster embedded in the nebulosity in the northwest (upper right) of this image.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 15 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 7762
NGC 7762 = Cr 457 = Mel 244 = Lund 1047
23 50 01 +68 02.3
Size 11

17.5" (10/13/90): about 100 stars in a 20' field including many mag 12-13 stars.  
Very large, fairly coarse but there is a rich region near the center consisting 
of six tight stars almost on a line oriented NNW-SSE with much haze nearby 
including a partially resolved clump close N.  A mag 8 star is at the E edge.  
Located 15' NE of mag 5.0 SAO 20853.

8" (10/31/81): scattered cluster but one rich subgroup, fairly large, elongated 
N-S.

- by Steve Gottlieb