NGC 1220 (Lund 100, Cr 37) Open Cluster in Perseus

Located at: RA 03 hours 11 minutes 41 seconds, Dec +53 degrees 20 minutes 54 seconds

Size: 1.6' (2.0') Magnitude: 11.8 Class: I 1 p

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, 470 minutes (47 x 10 minute subs), 11/17/18/19/2015; seeing 2.7-5.0 FWHM per CCDStack

Processing:

CCDStack 2.90.5589.16047, Photoshop CS5.1

Location:

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

Notes:

This November has been very frustrating, mostly very clear, but offshore winds (Santa Ana's) have made the seeing terrible. Used 47 out of 70 subs, tossing subs over 5 arc sec.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 2.0 arc minutes. See the 8" version.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 1220

NGC 1220 = Cr 37 = OCL-380 = Lund 100
03 11 41 +53 20.9
Size 2

17.5": very compact group of about a dozen faint stars mag 13.5-15 in a small 
1.5' wedge-shaped clump.  There is a very tight string of three strings at the 
NE end and the brightest mag 13 star is at the S end.  Does not appear fully 
resolved due to density and background haze.

8": faint open cluster, small, six faint stars are visible over unresolved haze.

- by Steve Gottlieb