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no problemo Asimov, btw i tried your focus method using a bright Star (Sirus), and it kind of works, but am unsure what the focused image should look like. I also found i could use this as an excelent way to check my colimation which is slightly out. It got me thinking that i could use this with my borrwoed artificial star to ajust collimation. Would this work.. I mean instead of using cheshires and centre dots etc use a webcam and an artificial star as a live way to measure collimation while adjusting the mirrors. Could i also use the artificial star for focus. How far would i need to place the AF star to work, or does this not matter. The problem with focusing with a dob and webcam is that the object is constantly moving. Its painfull and difficult. If i could maybe do it with the AF Star that would make life so much easier.
Take it one step further i wonder if it would be possible to somhow motorise a mirror cell and secondry holder so that you can use them for a automated collimation using the virtual star and webcam as a guide. Probably not worth the dificulty. It would probably require a motorised mirror cells to be designed for that purpose.
Regards
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