Object: Open cluster NGC 6755                   Constell: AQL

RA: 19h 07.8m           Decl: +04° 14'          Epoch: 2000
Mag: 7.5m               Size: 14'               Type: III 2 r

Observer: Jere Kahanpää
Obs. place: Helsinki, Finland
Date/Time: 15./16.9.1996, 22.50

Telescope: C 200/2000
Magn: 160x              Filter:
Field: 19'              NE Lim.mag: 5.4m
Background sky: 4       Seeing: 3-4
Weather: +7 °C, no Moon.           

Brightness: 4           Alt:    
Description: At 80x the field includes only one obvious object:
a small nebulous knot of stars. At 160x the knot is about diam.
1,5'x1' and includes 3 mag. 13 stars and a few fainter ones. The
glow is still visible but very faint. The knot is surrounded by
a slight concentration of stars mag. 11... Total about 15-20 *.
Diam. 5'. 

When I observed this object I knew there should be two clusters
in the field: NGC 6755 and CZ 39. The only object in the field
besides the knot at 80x is a large but very sparse group of
stars where NGC 6755 should be. Comparing the drawing with POSS
I confirms this object to be NGC 6755 (the central parts) and
the knot is a small group of stars within it. CZ 39 is outside
the field of view.