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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 23, 1997 11:21-11:23 UT

First image is a 30 second exposure of comet Hale Bopp taken using a 12 inch Maksutov telescope, working at f5. Image was taken through a Red (wratten 25) filter.. The original grey scale image has been coloured to show detail. Image taken at 06:21:53 EST. Image obtained using an SBIG ST8 camera, working in medium resolution mode (18 micron pixels). Field of view is approximately 0.3 degree (long RA axis) by 0,2 degrees (short declination axis).

The second image is a false coloured version of the above 300 second exposure of comet Hale Bopp,

The jets of comet Hale Bopp are visible in the third image. This image has been processed by subtracting a 15 x 15 pixel median filtered masked version of the original image which had an exposure time of ten seconds Incidentally, the jets visible in this picture are really easy to see with the unaided eye... This morning, viewing throughthe Planetarium's 24 inch reflector, the comets nucleus appeared mottled, with dark areas visible against the central region of the bright coma. If you look carefully at this image, you can see a couple of 'ripples', or wave like features just to the left of the comet. 10 second exposure obtained at 06:23.00 EST


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