Supernova remnant Abell 85 in Cassiopeia

Click here for a full resolution uninverted image 2.1 Mb file

here for a full resolution inverted image 2.9 Mb file

2012 September 19th at the Kelling Heath Star Party, Norfolk, UK
Televue TVNP101 100mm APO refractor 540mm fl.
Starlight Lodestar autoguider on G11 Mount
SBig ST8300M CCD camera
Images acquired in Maxim DL Pro 5
Astrodon 3nm Ha narrow band filter
 2 hours 30 minutes total exposure.
All sub exposures 30 minutes at -20 deg C.

Abell 85 also known as CTB 1 is an extremely faint supernova remnant in Cassiopeia. Its about the size of the full moon.

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