Are you using full live view zoom on the brightest star with the bahtinov mask? Pretty hard otherwise. Most DSLR cameras can do that now.
Then focus CCW and hope the temperature does not drop.
I also made a Duncan mask which in theory works on a bright star if the magnification is 200x.
Quote:
Originally Posted by RyanJones
This is a sample of my focus shots.
Am I doing right?
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