Quote:
Originally Posted by Dave882
There were periods of the night where it was near impossible to tell if focussed or not. Like looking through moving water!
I did try something out of desperation that may (or may not) have worked ok:
Using a bahtinov mask I centred one or more of jupiters moons that were away from the planet and 5sec rolling preview exposures on ASIAIR (evened out some the movement) was able to see diffraction patterns. Adjusted to make symmetrical and then back to the video.
Anyone else tried that before?
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Hi David
Generally I slew to a nearby mag 3 or 4 star and use the Bahtinov Mask to focus on the star then slew back to Jupiter.
Remembering to remove the Bahtinov Mask after slewing back is important though.
I occasionally forget....
Cheers
Dennis