CTB 1, Abell 85, LBN 576 (Doug Summers)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: The star 9 Cas

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CTB 1, Abell 85, LBN 576

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CTB 1, Abell 85, LBN 576

CTB 1 is an odd designation that I hadn't heard of until recently. It stands for Cal Tech Radio sources list B, object 1. This obscure list has a couple of interesting objects for optical / photographic interest. CTB 1 is a large but very faint supernovae remnant, once thought to be a planetary nebula (hence the Abell designation), but confirmed in 1960 as a SNR. It lies 10K light-years distant and is thought to be ~10K years old.

I believe this object is about the limit of what my OSC gear and post-processing setup can achieve without filters (and a much larger disk). It about killed my laptop while processing the sub exposures. In any case, it's a worthy object in a very rich field. It yields it's treasures unwillingly at best!

Celestron RASA
The OSC Club (One Shot Camera)

Supernova Remnants (SNR)

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CTB 1, Abell 85, LBN 576

CTB 1, Abell 85, LBN 576

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CTB 1, Abell 85, LBN 576

CTB 1, Abell 85, LBN 576

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