New Lens and Image of Orion's Belt
Well,
I applied a lot of advice here (Thank you very much!), and I had some issues with star trailing (I got a bit greedy and went for a higher exposure than I could afford, lol).
I also got some tips on post auto-tiff (DSS) photoshop adjustment - just curves and levels, and black/white point adjustment that was very helpful.
It's made such a difference! I know it sounds silly, but I had no idea there were so many stars behind the stars. So, so satisfying.
I'm told the lens I am using (Minolta 100mm f/2.8) is unusually suited for astrophotography as it is a particular high grade macro lens with a flatter field than usual and is sharp.
Now I REALLY want to get that barn door tracker working.
Camera Settings:
Sony SLT A77 Mirrorless
Minolta 100mm f/2.8
f.2.8 wide open
3.2 second exposure time
ISO 2000
Dark, Bias and Light frames used. Did not use any Flat as I can't make them properly. (What suggestions do you have for making them?)
1x Full 100mm Frame (non cropped)
1 x 100% Small Pic of Nebula to see Detail
Last edited by Jethro777; 09-11-2018 at 07:30 AM.
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