IC 2157 (Lund 204, Cr 80) and IC 2156 Open Clusters in Gemini

IC 2157 located at: RA 06 hours 04 minutes 48 seconds, Dec +24 degrees 04 minutes 18 seconds

Size: 5.0' and 3.5' Magnitude: 8.4 and -- Class: II 1 p and Cluster?*

North is up

West to the right


 8" f5 Newtonian reflector


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


Lumicon Red filter, 190 minutes  (19 x 10 minute subs) 01/23/2010; seeing 2.6-3.8 FWHM per CCDStack


CCDStack 1.6.1, Photoshop 7.0


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

Notes:* IC 2157 (lower, centered) is the more obvious of these two sparse open clusters, located almost one degree WSW of M 35 in Gemini.

"Star Clusters", by Brent Archinal and Steven Hynes
, after several paragraphs in the notes section, concludes "So it would appear that along with the fairly well known IC 2157, there is an asterism or possible separate cluster just to the north - which is IC 2156".

The NGC/IC Project has no updated information. The CDS lists IC 2156 @ 06h 04m 48s, +24d 08m 59s