CTB-1 / Abell 85 and King 12 in Cassiopeia

[Roberto]

Hello

As per my post in the WhatsApp chat, I took some LRGB data for King 12 - a beautiful set of clusters in Cassiopeia - which is in the same region of Abell 85/CTB-1, a large but dim supernova remnant, that I had imaged in late 2016/early 2017.

I reprocessed Abell 85 to extract more detail with the newer tools available in PixInsight and registered to the wider King 12 field.

Old CTB-1 data can be found here:  https://www.astrobin.com/278496/C/

Here's the starless version of that data with the new processing: 



This came from 31.5hrs of data...

And the new composition adding 6hrs of LRGB data using the tandem setup and the larger sensor:  https://www.astrobin.com/soj382/E/



The full resolution image can be found here:  https://cdn.astrobin.com/thumbs/-5FovhEatLnx_16536x0_IosSfE2L.jpg

Roberto

[Carole]

Which bit is King 12, just so I know what I am talking about - lol.
Can't seem to find anything on it on the internet.

[Roberto]

It's the set of star clusters that run diagonally from bottom left to middle/top right.  That's what I called the sceptre in the name of post in Astrobin.