Abell 85 - second test with Esprit APO 80/400 (f/5) @ DSLR H-Alpha (Wolfgang Zimmermann)

Abell 85 - second test with Esprit APO 80/400 (f/5) @ DSLR H-Alpha

Hi Starfriends,

Abell 85 is not a planetary nebula as assumed, but rather the remnant of a giant supernova. The nebula is now known as CBT 1 (CTB = Caltech Observation List B).
The nebula is about the size of a full moon and is about 10,000 light-years away. The diameter is estimated to be 100 light years. In 1955, astronomer George Ogden Abell found it while surveying an area in the constellation Cassiopeia.

In my second test I used an extremely faint supernova remnant, CBT 1. Of course I cannot achieve the results of a cooled astrocamera. This is where the EOS 80Da reaches its limits. But I'm quite happy with the result. The EOS 80da combination with an Astronomik H-Alpha clip filter (12nm) did quite well.

Thanks for watching and stay healthy

Wolfgang

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Hallo Sternfreundinnen und -freunde

Abell 85 ist nicht wie angenommen ein planetarischer Nebel sondern der Überest einer riesigen Supernova. Der Nebel wird heute unter der Bezeichnung CBT 1 (CTB = Caltech Observation List B) geführt. Der Nebel hat ungefähr Vollmondgröße und ist etwa 10.000 Lichtjahre entfernt. Der Durchmesser wird auf 100 Lichtjahre geschätzt. 1955 fand der Astronom George Ogden Abell bei der Durchmusterung eines Areals im Sternbild Kassiopeia.

In meinem zweiten Test habe ich mir einen extrem lichtschwachen Supernovaüberrest vorgenommen, CBT 1. Ich kann natürlich nicht das Ergebnis einer gekühlten Astrokamera erreichen. Da kommt die EOS 80Da schon an ihre Grenzen. Mit dem Ergebnis bin ich aber durchaus zufrieden. Das Gespann EOS 80da mit einem Astronomik H-Alpha Clipfilter (12nm) konnte sich ganz gut schlagen.

Danke fürs Anschauen und bleibt gesund

Wolfgang

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Status	Advanced success
Started	...
Astrometry.net job	8653312
PixInsight job	32C9ZRLSX1UZR4QSVUTM0HFVCBT8D0LT
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RA (center)	23h58m23s.51
RA (top/left)	23h46m20s.61
RA (top/right)	23h56m52s.17
RA (bottom/right)	00h09m50s.60
RA (bottom/left)	00h00m05s.24

Dec (center)	+62°38′49″.8
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