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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: February 9, 1997 10:30, 11:10 UT

First image is a 15 minute (900 second) second exposure of Comet Hale Bopp started at 05:30 EST on 9th February 1997. Taken through a blue filter. SBIG ST8 CCD image, taken at the prime focus of a 12 inch f5 maksutov telescope. Image has been flat fielded, and gamma and contrast scaled in using Mira.. Image dimensions 31 arcminutes (long right ascension axis) by 20 arcminutes (short declination axis) During the exposure the camera was guided on the motion of the comet, which means that the star images are trailed.

Second image is a five minute exposure of the comet, guided on the nucleus has been coded with a false colour pallete. Image taken at 06:10 EST

Third image is 30 second and 5 minute tri colour images, created by taking images through red, green and blue filters.


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