Harvard 21 (Cr 458) and Frolov 1 (C2354+613) Open Clusters in Cassiopeia

Center of field at approximately: RA 23 hours 56 minutes 03 seconds, Dec +61 degrees 39 minutes 59 seconds

Size: 4.0' (3.0') and -- Magnitude: 9.0 and -- Class: IV 1 p and --

North is up

West to the right


8" f5 Newtonian reflector


 ST-8XME, self-guided, binned 1x1, temp -10c, camera control MaxIm DL 4.56


Lumicon Red filter, 320 minutes (32 x 10 minute subs), 09/25/2010; 2.0-3.1 FWHM per CCDStack


CCDStack 2.13.3926.23433, Photoshop 7.0


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

Notes: This field doesn't offer much ... even though my charting software (Megastar v5.0.12) lists two open cluster here. Harvard 21 is between the two 'bright' stars to the west (right), and Frolov 1 is the clump of stars  just east (left) of center. According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of Harvard 21 is 3.0 arc minutes. Comments for Harvard 21; "DSFG: Probably not a real cluster. Aliases Cr 458, C2351+614." Comments for Frolov 1; "Archinal: Center and brightest star is LS I +61 110 (V=10.7, B). Alias: C2354+613". See this image for positions from Megastar. Four and five of 6 open clusters in a line ... see Berkeley 58