First light from my new backyard observatory! I am still having 2 major issues with my photography:
First is my OIII flats don't seem to be correcting properly. The Ha and SII stacks look fantastic. But OIII still has something wrong. Still getting a halo around the whole frame as if my flats are not correcting all the way. I tried taking flats at different exposure times, but it didn't seem to matter if it was 8k or 30k ADU. Same difference.
Second problem is my stars are very oddly-shaped. I think its because of flexure I'm getting. I can tell by using Blink process and rapidly paging thru the subs. I can tell when the camera is pointed to one side of the meridian or the other. The stars seem to streak at a different angle during those times. So I'm going to have to rethink my
camera/lens arrangement. I really am surprised, because the tube rings really hold it down securely. But I do know that I'm pretty badly out of balance, because of center-of-gravity issues.
Minimal processing was done:
[li]Stacked everything with Linear Fit clipping[/li]
[li]Combined in Pixelmath with custom pallette using Ha and SII[/li]
[li]Multiscale Linear Transform for noise control[/li]
[li]Histogram Transformation (stretch to non-linear)[/li]
[li]HDR Multiscale Transform to suppress the blown-out core of Orion[/li]
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