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.
Comet Hale-Bopp Home Page