C/2020 F3 (NEOWISE) inner coma and tail animations

Nick James
 

The following links are a set of animations of motion in the inner coma and tail of C/2020 F3 (NEOWISE) on evenings from July 19 to July 30. All are processed using a standard Larson-Sekanina filter with r = 2.6 arcsec, theta = 10 deg. The first one is at a pixel resolution of 0".65 arcsec, all the others are at 1".29 arcsec. The files in date order are:

http://www.nickdjames.com/Comets/2020/2020f3_20200719_2128_ndj.gif
http://www.nickdjames.com/Comets/2020/2020f3_20200720_ndj.gif
http://www.nickdjames.com/Comets/2020/2020f3_20200721_ndj.gif
http://www.nickdjames.com/Comets/2020/2020f3_20200722_2201_ndj.gif
http://www.nickdjames.com/Comets/2020/2020f3_20200728_ndj.gif
http://www.nickdjames.com/Comets/2020/2020f3_20200730_ndj.gif

The set on July 22 are probably the best with the longest clear run and a lot of activity going on. There is clear rotation of the spiral in the inner coma and interesting flows down the tail. By July 30th the comet had faded and the short exposures required were quite noisy.

Nick James. Director BAA Comet Section.

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