NGC 2252 (Lund 233, Cr 102) Open Cluster in Monoceros

Located at: RA 06 hours 34 minutes 23 seconds, Dec +05 degrees 22 minutes 30 seconds

Size: 15' (18') Magnitude: 7.7 Class: III 2 m n

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

  ST-8XME, self-guided, binned 1x1, temp -25c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 330 minutes (33 x 10 minute subs), 02/27/2009; seeing 2.2-5.7 FWHM per CCDStack

Processing:

CCDStack 1.5.2.1, Photoshop 7.0

Location:

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

Notes: Comments from "Star Clusters", by Brent Archinal & Steven Hynes; "Archinal: DSS shows obvious N-S stream of bright stars, with large bright nebula involved on SW side." The "large bright nebula" is the northeastern outlying portions of the the Rosette Nebula. See this interactive image of the Rosette Nebula from Davide De Martin.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 18 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 2252
NGC 2252 = Cr 102 = OCL-514 = Lund 233
06 34 19.8 +05 19 22
V = 7.7;  Size 18

18" (3/13/04): at 115x, this fairly rich field is located just 50' NE of the 
center of the Rosette Nebula (N2244)!  Most distinctive in the field is a very 
elongated N-S group of roughly 50 stars in a 12'-15' string just 2' wide.  The 
group has a distinctive hook on the north end as it curves sharply towards the 
SW.  A near perfect triangle of mag 9 stars at 30", 34" and 40" separation lies 
23' E.

- by Steve Gottlieb