Ronchi Testing on a SCT?
4 replies to this topic
Posted 04 September 2005 - 10:36 AM
Can one use the EasyTester I Ronchi Testing eyepiece to test the optics of a SCT? I have a 12" LX200 and want to test for excessive aberration. Has anyone had experience with this quaint little device on a SCT?
Posted 04 September 2005 - 01:03 PM
Hi, I purchased a 300 LPI Ronchi ruling from Edmund Optics and have used it for testing various telescopes. Yes, the EasyTester will work for SCTs as well. You will need some time and patience to interpret the deviations of the lines.