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Originally Posted by [1ponders]
Adam do you focus on a star lock the mirror and then slew to the planet or try to focus on the planet itself with the hartmann mask?
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Yes, I used Regulus yesterday morning to focus on, locked the mirror and slewed over to Saturn. I have only used the Hartmann mask so far in pretty poor seeing. Once I get the three triangles together the image is boiling all over the place and I expect to see diffraction spikes but I think turbulence washes them out. Yesterday, I probably had the best seeing I've had when planetary imaging - not that it was great - but I could see diffraction spikes. Also, as I moved my focusser the star image seemed to get brighter. I've read elsewhere about lining up diffraction spikes or getting the diffraction spikes to a maximum length. Like everything it's probably all seeing related - the better the seeing the better your focussing and imaging.
Thanks for the advice Robert_T and Rumples - it really helps to find out what others are doing and where I can get with time and effort and good advice. Incidentally I have the Meade electric focusser.
Ken, I'm happy for you to play with my image.
