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I am an amateur photographer. I took this picture of Comet Hyakutake
(C/1996 B2) on 24 March 1996 at around 2300 EST (25 March 1996 0400
UT), from a relatively dark location in Economy, PA, USA (40 37 24 N
80 11 30 W), about 20 miles northwest of Pittsburgh. I used an
everyday 35mm SLR camera mounted on a tripod, with a "normal" 50mm
lens set at f/2.0, Kodak Royal Gold 1000 color print film, and an
exposure time of about 20 seconds.
I got the picture into the computer by scanning the negative directly.
Then I used Photoshop to enhance the contrast. All of the work in
PhotoShop was performed on the image as a whole (no retouching).
The tail, as visible in this photo, is about 22 degrees long, or about
85% the length of the big dipper. The three bright stars that form an
arc from near the center to the upper left corner are the first three
stars in the handle of the big dipper.
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