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BAA Images Nick James

Observation by Nick James: 29P coma expansion

Uploaded by

Nick James

Observer

Nick James

Observed

2021 Oct 11 - 00:00

Uploaded

2021 Oct 11 - 20:01

Objects

29P Schwassmann-Wachmann

Equipment
  • ASI6200MM + Celestron HD11
Exposure

20x60s

Location

Chelmsford, UK

Target name

29P

Title

29P coma expansion

About this image

This is a sequence of seven nights showing the expansion of 29P's coma. Each image has been processed in the same way (sky background removal then log stretch) so they are directly comparable. The images are centred on the ephemeris position of the comet. As the coma expands its surface brightness fades but, since there is the same amount of material occupying a larger volume the overall magnitude stays around the same.

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