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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: January 20, 1997 11:07:20 UT

First image is a 50 second exposure of Comet Hale Bopp started at 06:07:20 am EST on 20th January 1997. SBIG ST8 CCD image, taken at the prime focus of a 12 inch f5 maksutov telescope. Image has been flat fielded, but apart from that is unprocessed. Image dimensions 31 arcminutes (long axis) by 20 arcminutes

Second image is the original image has been unsharp masked in photoshop using 500% effect with a 15 pixel radius with a threshold of 0 to reveal (what I hope is real!) structure around the coma of the comet. .


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