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Object Information |
Observing Log
Date September 26, 1998
Time at end of first CCD image 09:29 PDT
Time at end of last CCD image 09:42 PDT
Observing Location: At home on the drive way
Observation of object:
M55 is a irregular round globular cluster with
some stars resolved towards the center and it has a bright irregular core.
Sky Conditions
Sky transparency: 5.0 (Magnitude of the faintest star visible with the unaided eye in Ursa Minor)
Moon sets at 22:28 PDT on September 26, 1998
Astronomical twilight ends in the evening at 20:38 PDT on September 26, 1998
Astronomical twilight starts in morning at 5:20 PDT on September 27, 1998
Observing Equipment
80 mm aperture refractor telescope and CCD Cookbook Camera
CCD image time: 4 - 240 seconds images added together
CCD dark calibration frames: 23 - 240 seconds dark frames
Use Test patterns to calibrate monitor brightness, contrast, height and width