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A Few More Tests You Can Do

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Posted by StevePR on April 7, 2002 15:42:01 UTC

Hi,

You can also check the performance of the mirror through star testing (checking the diffraction rings inside and outside of focus) and by viewing an unfocussed star through a Ronchi grating placed at the eyepiece.

Check this site for more info...

http://www.geocities.com/telescope1999/14-5inch.html

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