Object: Open cluster NGC 6664                   Constell: SCT

RA: 18h 36.7m           Decl: -08° 13'          Epoch: 2000
Mag: 7.8m               Size: 16'               Type: III 2 m

Observer: Jere Kahanpää
Obs. place: Helsinki, Finland
Date/Time: 14./15.9.1996, 22.10

Telescope: C 200/2000
Magn: 80x               Filter:
Field: 37'              NE Lim.mag: 5.3m
Background sky: 4       Seeing: 3-4
Weather: +6 °C, no Moon.           

Brightness: 3           Alt: 20°
Description: 20 stars mag. 10... Brightest stars on the N edge.
Star density fall slowly towards S and the cluster blends into
the background. Diam. 13'. Alfa SCT on the W edge of the field.