Object: Open cluster KING 21                    Constell: CAS

RA: 23h 49.9m           Decl: +62° 43'          Epoch: 2000
Mag: 9.8m               Size: 2.5'              Type: III 3 m

Observer: Jere Kahanpää
Obs. place: Hartola, Finland
Date/Time: 24./25.8.1996, 00.50

Telescope: N 205/1000
Magn: 80x               Filter:
Field: 37'              NE Lim.mag: 6.2m
Background sky: 2       Seeing: 2-3
Weather: +8 °C, no Moon.           

Brightness: 4           Alt: 75°
Description: A faint cluster. Estimated Trumpler-type III 1 p.
About 15 stars mag. 13,5... within 4'. The stars are quite
evenly distributed and of similar brightness like in many other
moderate/rich clusters (M37, M11, ngc 7789, ngc 188 etc). A bit
concentrated near the 3 brightest stars (a lone one and a pair
near it) at the center of the field. No bright stars in this
area.