17P/Holmes | Lorenzo Comolli

Lorenzo Comolli
Location of photo
Tradate, VA, Italy
Date/Time of photo
1-2 november 2007, RGB 2.46 (2 nov) - 23.21 (1 nov) - 20.34 (1 nov) UT
Tech details: Schmidt Camera 300mm f/2.0 + CCD from a light polluted city. 1-2 november 2007, RGB 2.46 (2 nov) - 23.21 (1 nov) - 20.34 (1 nov) UT. Total exposure 3h46m, in frames of RGB 30:60:120 s each. Central dust coma elaboration with Larson-Sekanina 10°. North is up.
The comet tail is fan-shaped, with an aperture of about 90°. This is due to the small angle of the tail respect our line of sight (about 17°). The tail is best visible with a blue filter. The tail components are at position angles between 165° and 270°, extending from the optocenter at least 1°. The dust coma is 11' diameter and the gas coma is about 42'.
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