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Griffin Images of Comet Hale-Bopp


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: March 28, 1997 00:20-00:50 UT

First image is a wide field view of Hale Bopp taken using an Aero Ektar lens. Exposure started at 19:50 EST (=00:50 ut). Linear feature is a flag pole.... Exposure 4 minutes, taken through a blue filter.

Second image is a 180 second exposure of comet Hale-Bopp. Exposure started at 19:20 EST on 27th March (which is of course 00:20 UT on 28th March ). A 12 inch Maksutov telescope, working at a focal ratio of f5 was used with an SBIG ST8 CCD camera and a blue filter. The CCD was used in medium resolution mode, with 2 by 2 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 by subtracting a 20 by 20 median filtered masked version from the original to reveal structure in the coma.

Third image is a 60 second image of Hale Bopp taken through a blue filter. Exposure started at 19:34:28 EST (=00:34:28 ut) Fourth image is a A false colour version of the third image.

Ian Griffin

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