A Comet with 3 Comas | Jim Melka

Jim Melka
Location of photo
Chesterfield, MO
Date/Time of photo
10-28-2007 at 02:09UT
Image was captured with a Canon 20d DSLR with a 270mm telephoto lens on a clock-driven EQ1 Orion equatorial mount. Forty 30sec frames obtained at f/5.6 at a speed of 400 were combined with Images Plus 2.80 to produce a 20-minute exposure.
Sky transparency rated 5 of 6. Altitude of the comet in Perseus about 35 degrees. Note the distinct green color of the outer coma of the comet that has been typical of recent comets. Good seeing. Jim Melka