Comet holmes from Naval Observatory | Richard & Margaret Schmidt

Richard & Margaret Schmidt
Location of photo
Washingon DC
Date/Time of photo
1 Nov. 12:37-12:49 am
US Naval Observatory 12-inch refractor, Nikon D100 prime focus ISO 6400 stack of 25 exposures 20-seconds each.
This image shows the still bright but considerably faded nucleus of Comet Holmes with a tail streamer extending to the southwest about 2 arc minutes in length. This rotational gradient image was made from differencing the original image with two copies rotated plus and minus 15 degrees. The telescope is a vintage refractor made in November 1892, the discovery date of the comet.