NGC 1624 (Lund 136, Cr 53) / Sh2-212 (LBN 722) Open Cluster / Bright Nebula in Perseus

Located at: RA 04 hours 40 minutes 37 seconds, Dec +50 degrees 27 minutes 42 seconds

Size: 1.9' (3.0') / 5.0' Magnitude: 11.8 / -- Class: II 1 p n / Emission (Sharpless) 1 2 3

North is up

West to the right

Telescope:

14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 580 minutes (58 x 10 minute subs), 12/13/18/2014; seeing 2.3-4.0 FWHM per CCDStack

Processing:

CCDStack 2.84.5400.22239, Photoshop CS5.1

Location:

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

Notes: Got one more night in (18th) to complete this object ... still having a cloudy December. See the 8"version.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of the open cluster NGC 1624 is 3.0 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 1624

NGC 1624 = OCL 403 = Ced 37 = LBN 722 = Sh 2-212 = Cr 53
04 40 37.2 +50 27 41
V = 10.4;  Size 5x5

13.1": fairly bright, round, compact glow surrounding a small group of at least 
five stars using a UHC filter.

- by Steve Gottlieb