Comet Holmes – Evolution of a comet outburst

09.12.2007

20071209_5x2min_f56_200mm_o.jpg

The weather has been pretty dismal the last days, but yesterday I got another chance to take an image of comet Holmes. The open cluster to the right is NGC 1245, the galaxy NGC 1169 is also visible to the upper left of the comet.
Lens:
Nkkor Series-E 70-210mm f/4, shot at f/5.6
Camera
Nikon D200
Exposure:
5x120s, ISO 800
Date:
9th, December 2007
Processing:
Stacking, dark subtraction in IRIS, Histogram adjustment, sharpening, reduction of star size in Photoshop.

28.11.2007

After some days of rain and snow, I was again able to take some pictures of Comet Holmes, which is still growing in size, but becoming a little fainter every day.

 

Lens:
Nkkor Series-E 70-210mm f/4, shot at f/5.6
Camera
Nikon D200
Exposure:
12x120s, ISO 800
Date:
28th, November 2007
Processing:
Stacking, dark subtraction in IRIS, Histogram adjustment, sharpening, reduction of star size in Photoshop.
Here is a montage of the image above with another image I took on the 18th November, that shows the movement and increase in size of Comet Holmes very impressively:

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