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Griffin Images of Comet Hale-Bopp

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ampo122_s.jpg39K ampo123_s.jpg14K ampo124_s.jpg23K ampo125_s.jpg47K
Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: March 17, 1997 10:09-10:44 UT

First image is a 60 second exposure of comet Hale-Bopp. Exposure started at 05:09:22 EST. A 12 inch Maksutov telescope, working at a focal ratio of f5 was used with an SBIG ST8 CCD camera with a blue filter. The CCD was used in low resolution mode, with 3 by 3 binning, giving a resultant pixel size of 18 microns. The field of view is 0.3 degrees (long axis) by 0.2 degrees (short axis). The image has been processed using Mira. A 20 by 20 median filtered masked image was subtracted from 105% of the original. A false colour pallate was then added.

Second image is a 200 second exposure starting at 05:31:11. Taken with a 12 inch f5 telescope, through a blue filter.SBIG ST8 CCD Camera working in medium resolution mode was used to take this picture. Third image is a false colour version of the 2nd image.

Fourth image is a 10 second exposure of comet Hale Bopp through a blue filter has been processed to reveal structure in the inner coma. Exposure started at 05:43:37 EST.


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