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Ronchi screen with diffraction lines between?.

Started by barf, 05/16/2003 06:27AM
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Posted 05/16/2003 06:27AM Opening Post
Larry Stange
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Join Date: Nov 2002

Location: Yuba City CA, US

Posts: 157

Are thin diffraction lines that are nearly straight except for slight wobble due to heat waves BETWEEN the heavy dark Ronchi lines an indicator of a better objective? These thin lines appear on BOTH sides of focus.

re: Celestron CR150-HD.
Thanks for any analysis..... -Larry
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