Hale-Bopp - 30 april 1997

The ion tail start to widen, and the same the dust tail. The cause is the change of the geometric caracteristics of Earth-Sun-comet.
 

Technical Data
Optics Photographical objective
Focal Lenght 200 mm
Focal Ratio f/3,5
Exposure Time 2 min
Film Scotch Chrome 800-3200
Developement sensibility 3200 ISO
Location San Martino (VA, on the Italian Prealps) at 1083m
Date and time of exposure start 30 april 1997, 20.40 UT
Mount Meade 2080
Tracking Manual
Notes Rescanned in 2002


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