This is a new target for me and only my second serious attempt at mono. I am enjoying the greater range of colours I get to play with in mono and am happy with my new narrowband filters than seem less prone to halos compared to the Lextreme (which is still an excellent filter for OSC).
The antlia ultra filters appear very effective and I like the scale and pixel size of the ASI294mm at 2x2 at least...will try 1x1 on my askar400 with 0.7 reducer at some point but for now using my APM130 and Riccardi 0.7x. Some tilt still to be resolved but reluctant to waste precious clear skies resolving.
12hours of data integrated.
Taken over two nights with plenty of cloud leading to quite an imbalance in the numbers of subs from the three narrowband filters, around 4 and half hours each of Ha and OIII and only a little under 3 hours of SII. One of the challenges I guess of mono... tried to do some more SII tonight, but clouded out.
Stacked, combined and pre-processed in APP and separately combined APP filter stacks in Startools (both as SHO).
The highlights were better protected in the Startools process so in PS I combined the best of both in the result here.
Fuller res on astrobin
https://astrob.in/5te3pk/0/