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Griffin Images of Comet Hale-Bopp

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ampo149_s.jpg14K ampo150_s.jpg19K ampo151_s.jpg18K ampo152_s.jpg23K
Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: March 30, 1997 00:25-00:26 ut

First image is a 20 second exposure of Hale Bopp, made through a blue filter. Exposure started at 19:25:07 EST (=00:25:07ut). Image obtained using a 12 inch Maksutov telescope working at f5. Image has been dark subtracted and then false coloured using Mira's 'comet' pallete.

Second image is a 0 second image through a blue filter started at 00:25:07 has been processed using a rotational gradient filter with rotation 10 degrees and amplification 10.

Third image is a 20 second image through a blue filter started at 00:25:07 has been processed using a rank order masking technique; a 5x5 pixel mask with 60% and amplification 10 was used in this case.

Fourth image is a20 second exposure of Hale Bopp, started at 00:26:17 UT has been processed using a rotational gradient filter, with rotation 10 degrees, and amplification 10.

Ian Griffin
GRIFFIN.I@a1.brevard.cc.fl.us


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