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Observing Log
Date September 20, 1998
Time at end of first CCD image 20:16 PDT
Time at end of last CCD image 20:28 PDT
Observing Location: At home on the drive way
Observation of object:
Sky Conditions
Sky transparency: 5.2 (Magnitude of the faintest star visible with the unaided eye in Ursa Minor)
Note: Image was taken before the twilight ends.
Moon sets at 19:28 PDT on September 20, 1998
Astronomical twilight ends in the evening at 20:51 PDT on September 20, 1998
Astronomical twilight starts in morning at 5:11 PDT on September 21, 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: 24 - 240 seconds dark frames
Use Test patterns to calibrate monitor brightness, contrast, height and width