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Old 05-01-2009, 09:05 PM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
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Do the same test with the Genesis....
You should get "perfect" disks for comparison...
That way you can eliminate the seeing artifacts and be able to get a better analysis.
A Rochi grating should also show the over/ under correction.
The Roddier freeware software can also be used to estimate the accuracy of the optics based on webcam images.
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