Focus Assistant
Posted: Sun Sep 09, 2018 10:25 am
Hi,
Have just started using Sharpcap (3.1 Pro) with a recently purchased ASI294MC Pro camera which I am using on a Sky-Watcher Quattro 8” CF scope.
I am mainly interested in deep sky imaging and am trying to improve focus using the FWHM focus assistant. I am using the FX selection area around a single bright star. I don’t seem to be able to get the shading to appear around the star as indicated in the user manual. I have tried adjusting the black level all the way up to 100% (when the star disappears) and also adjusting the noise reduction but no luck. Also tried adjusting gain and exposure - the preview image looks fine at a gain of 200 and exposure of 1s.
Any ideas on what the problem might be. The focus scores are still appearing and changing when I adjust focus (manual Focuser) albeit it is very sensitive and hard to settle on the best score.
Appreciate anyone’s advice.
Thanks,
Leigh.
Have just started using Sharpcap (3.1 Pro) with a recently purchased ASI294MC Pro camera which I am using on a Sky-Watcher Quattro 8” CF scope.
I am mainly interested in deep sky imaging and am trying to improve focus using the FWHM focus assistant. I am using the FX selection area around a single bright star. I don’t seem to be able to get the shading to appear around the star as indicated in the user manual. I have tried adjusting the black level all the way up to 100% (when the star disappears) and also adjusting the noise reduction but no luck. Also tried adjusting gain and exposure - the preview image looks fine at a gain of 200 and exposure of 1s.
Any ideas on what the problem might be. The focus scores are still appearing and changing when I adjust focus (manual Focuser) albeit it is very sensitive and hard to settle on the best score.
Appreciate anyone’s advice.
Thanks,
Leigh.