This is a 3h 39min Ha process. Hoping I get some color on this tonight
@ 300gain and 21offset I have
@ Unity gain (139gain 21offset)
Camera is ZWO asi1600mm-cool
Scope SkyWatcher Equinox 80 PRO APO
mount Celestron AVX
GuideCam ZWO asi120mm-s
GuideScope Orion ShortTube 80
All cooled to -25C and imaged remotely with my new remote server setup (Asus PN50, Ryzen7, USB3.0, GPU acellerated VNC, ++).
It is a little ruffly processed. It was fun to pull out the contrasts, but it ended up noisy. Will use some more time processing the color version, when its ready.
Also need to figure out what is up with my field flattener. It should work better than this!
Very well done, looking forward to the color version! The "flattener thing" to me looks like the camera sensor was slightly tilted. Stars are nice in the lower left part of the picture and slightly bloated towards the upper right.
This flattener I'm using has a form of self centering feature, that I think centers it, but leaves it easily tilted.
I might start investegating getting a new one, as this has been a problem for as long as I had it.
Great image! Can't wait for the color version either.
If you are using a Hotech SCA: those are VERY good. You need to tighten it as much as you can and then it shouldn't tilt anymore. A closer inspection of your image reveals a too close distance in the upper right and slightly less in the lower right and too far in the lower left and slightly less in the upper left. Are you sure this isn't sensor tilt?
Wouter van Reeven
ASI6200MM and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and 5 slot 1.25" filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R
I was having some issues fine focusing, and ended up tightening my focuser to fix it. So no its tighter than ever before.
This fieldflatter I have is designed to self center in a way that I know others has had some issues with before.
If you think of the unit as a straight tube that goes into the focuser, and a larger diameter body with the lenses. The self centering is then a radius around the circumference of the unit between the tube and the body.
This should make the unit fix to the center when pushed against the focuser. However a 90degree edge would make it fit paralell with the focuser tube.
I know one stargazer used a lathe to mill off the radius. The flattener then worked better, seated paralell to the telescope.
I don't have a lathe tough. I might just try to use some time to research witch ff would work well for my setup, and get a new one. Now that my obsy is free of known bugs, and ready fore some light to be caught