Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)
Cassiopeia A (Cas A)   SN1680, John
Cassiopeia A (Cas A)   SN1680
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Cassiopeia A (Cas A) SN1680

Cassiopeia A (Cas A)   SN1680, John
Cassiopeia A (Cas A)   SN1680
Powered byPixInsight

Cassiopeia A (Cas A) SN1680

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Description

Cassiopeia A (Cas A) is a supernova remnant (SNR SN1680) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies above 1 GHz. It was very responsive to OIII and SII filters but minimal Ha. The SNR seems to be surrounded by significant Ha clouds in its general area. Imaged over four nights with many subs eliminated by clouds and smoke. HSO LRGB

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Cassiopeia A (Cas A)   SN1680, John