NGC 2420 (Lund 364, Cr 154) Open Cluster in Gemini

Located at: RA 07 hours 38 minutes 24 seconds, Dec +21 degrees 34 minutes 24 seconds

Size: 10' (6.0') Magnitude: 8.3 Class: I 1 r

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:

Red (Hoya 25A) filter, 150 minutes (15 x 10 minute subs), 02/25/2007

Processing:

CCDStack 1.1, Photoshop 7.0

Location:

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

Notes: According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 6.0 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 2420

NGC 2420 = Cr 154 = Mel 69 = OCL-488
07 38 24 +21 34.5
V = 8.3;  Size 10

17.5": excellent cluster of at least 50 stars mag 11-15 within a 6' diameter.  
Good spread of magnitudes, includes 15 stars mag 11-13 over a rich background of 
numerous mag 14-15 stars and unresolved haze.  The brightest mag 10 star is on 
the W side and has a mag 13 companion 12" S.  Located between mag 9.1 SAO 79575 
6' NNE and mag 8.9 SAO 79563 6' SSW.  A faint galaxy pair CGCG 117-059 and CGCG 
117-060 are in the field 10' WNW!

- by Steve Gottlieb