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I am seeking any help on focusing on a planet vs. a star. I understand that the best way to focus of course is to go to a nearby star and use the FWHM feature in frame and focus. Well that works well for the star or maybe nebula and galaxies, but when I slew back to a planet say Jupiter then I am a bit out of focus. Just enough in fact, that when I run the video through Registax-6 and come to the wavelets/sharpen sliders and slide them all the way to 100%, there is very little if any improvement in the image. Oh you can tell that it's Jupiter with it's equatorial bands and others near both poles, but it's just a bit fuzzy or out of focus.
Now I know there are many variables in the equation for focusing. Seeing, transparency, jet stream, camera noise, light pollution etc. I can account for all of these, even the noise can be smoothed out, but the blasted image is still just fuzzy. And it's so frustrating because you can tell it's soooo very close to being great, but falls short, or long?
I was wondering if instead of focusing on a star, that maybe I should be focusing on the planet itself right from the start and use the same FWHM mode in frame and focus? This eliminates my subjective focusing by eye, and instead uses BYEOS objective.
Here is my set up- CPC/SCT 11inch Celestron fork mount on a wedge polar aligned, and go to sky aligned, Crayford dual focuser to eliminate mirror flop, dew shield on and warm, using a Canon 1100-D( T-3 Rebel) dslr camera, at f-10 with a 2.5x Televue powermate barlow. Approx. 20 fps video that runs about 2minutes in length. Capturing in BYEOS Avi format.
I welcome any suggestions and eagerly await some wisdom from anyone on this focusing subject. Thanks.
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