Object: Open cluster STOCK 21                   Constell: CAS

RA: 00h 30.1m           Decl: +57° 58'          Epoch: 2000
Mag:                    Size: 5'                Type: IV 2 p

Observer: Jere Kahanpää
Obs. place: Helsinki, Finland
Date/Time: 10./11.10.1996, 22.30

Telescope: C 200/2000
Magn: 160x              Filter:
Field: 19'              NE Lim.mag: 5.4m
Background sky: 4       Seeing: 2-3
Weather: +4 °C, no Moon.           

Brightness: 4           Alt: 75°
Description: A faint and quite poor cluster, not easy to detach
from the rich background. About 15 stars mag 12... with a
background of numerous faint stars. Irregular and devoid of
structures. Diameter 5'. 

Own coordinates:  RA       00h 30.4m
                  Decl.    +57° 57'