Observation by David Strange: Cassiopeia A

Uploaded by

Mr. David Graham Strange


David Strange


2021 Oct 11 - 00:23


2021 Oct 11 - 11:15

  • Celestron 9
  • ASI533MC
  • ASIair Pro

30 x 120s


Salcombe Regis, East Devon

Target name



Cassiopeia A

About this image

This SNR is the brightest radio source in the sky. The explosion should have been visible circa 1690 but there are no written records. It is seen here as a colourful ring of material about 10 light years in diameter lying at a distance of 11,000 lightyears. I think an an L-enhance filter would bring out the fainter detail.

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