Comet 46P/Wirtanen
Taken by V. Mette on December 5, 2018 @ iTelescope T12 - Siding Spring Observatory
Click photo for larger image
  Camera Used: Finger Lakes Instrumentation (FLI) MicroLine ML 11002
Exposure Time: 600/1
Aperture: f/5.0
ISO: Unavailable
Date Taken: 2018:12:05 13:15:51
 
More images
Details:
Image of 46P composed of sequentially made R/G/B-images to one RGB-image.

Due to the motion of the comet the coma is elongated over the integration-time of - in total - 30 min. If compared with the L-channel (mono) image, you will realize the elongation, even if on the mono image the coma has an elongation itself due to long-time exposure.

Color image:
Each channel (R/G/B) 600s

Mono image:
L-channel 600s, 2x binning
Comments
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Would tracking the comet instead of a star eliminate the elongation?
Posted by HDT 2018-12-05 13:09:49
... of course it will elimnate the elongation, but it will elongate all stars to star-trails ...
Posted by counterglow 2018-12-05 13:30:37
14 thumbs up
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