This is now about ~50 x 7 min frames of
Ha, O3, and S2 with a lot of frames plagued by clouds (about 20-30 total but
PI scooped them in anyway). I think the core region is decent enough but I was trying to get the whole widefield and although sometimes it feels like the data is there, it is also elusive. I am thinking of redoing the registration with a linear fit (frame adaptation) to one of the better/darker
Ha frames to start with and perhaps discard all the frames with the clouds.
The problem is that the core region which is okay is one I was planning to repeat with my FC100 anyway. Besides the image scale of the SV70T is a bit soft - it works for widefield targets. So I could continue to go deeper here in
Ha, or on all three filters but it's really the outer loop I'm trying to capture in more detail and some of it is I think
Ha and some of it is O3. I could also try for a higher gain (this was at low gain to capture more of the dynamic range which worked nicely for the elephant's trunk) and then do a HDR integration.
Here're a couple of versions. Unlike previous NB images of mine where I'd do the HP tweaks in
PS, I decided to stick to
PI only. So just combination of the three channels and then SCNR to merge the green with the red and blue.
Images resized for upload to forum.
--Ram
Tubes: Celestron 9.25" 235mm f/10 XLT EdgeHD SCT; Meade ETX 80mm f/5 achromat; Coronado SolarMax II 60mm f/6.6 Hα <0.7Å BF10 solar; Stellarvue 70mm f/6 triplet apochromat; Obsession UC18 457mm f/4.2 with Argo Navis & ServoCAT; Takahashi FS128 5" f/8.1 and FC100DF 4" f/7.4 fluorite doublet apochromats.
Mounts: AVX; LXD75; Paramount MyT. Eyepieces: 2" Tele Vue Ethos 4.7/13/21mm, Paracorr, 2,4x Powermate; Stellarvue 0.8x, Takahashi 0.7x, 0.66x reducer/corrector.
Cameras: ZWO ASI120MC-S; Lodestar X2c; X2m; Canon T7i; QHY163M; QHY247C; QHY294M-Pro.
Filters: 1.25" Astrodon 5nm Ha, 3nm O3 and S2; Chroma LRGB.
