Red filter on Castor in Gemini
Good illustration of focus and collimation on the airy disk of a star. Set gain to full, leave gamma off / default and set exposure to a spot near where the 1st diffraction rings appear 'bright'
Showing posts with label binary. Show all posts
Showing posts with label binary. Show all posts
Monday, May 4, 2009
Older focus and collimation test
Red filter on Castor in Gemini
Good illustration of focus and collimation on the airy disk of a star. Set gain to full, leave gamma off / default and set exposure to a spot near where the 1st diffraction rings appear 'bright'
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