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/ (https://www.astrobin.com/278496/C/)
Here's the starless version of that data with the new processing:
(https://cdn.astrobin.com/thumbs/UBNbqTamF3YS_2560x0_ZJS7MSV2.jpg)
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/ (https://www.astrobin.com/soj382/E/)
(https://cdn.astrobin.com/thumbs/-5FovhEatLnx_2560x0_JLpiYtW8.jpg)
The full resolution image can be found here: https://cdn.astrobin.com/thumbs/-5FovhEatLnx_16536x0_IosSfE2L.jpg (https://cdn.astrobin.com/thumbs/-5FovhEatLnx_16536x0_IosSfE2L.jpg)
Roberto
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.
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.