Re: Schmidt corrector plate

Alexander Yascovich (yas@kisa.iki.rssi.ru)
Mon, 24 Jul 1995 18:52:40 +0400

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>
>I test optical systems by autocollimation with an optical flat. It's pretty
>much foolproof. All errors are doubled in this test. I rarely see
>astigmatism in an optical element. It's easily prevented by using sound
>fabrication techniques.
>
>--
>Steve Strickland
>Lensnut@tpoint.net
>
>
Dear Steve,

Thank you for your reply. May I ask you to describe more precisely the system you've tested. How much was longitudial aberration for the whole system measured by autocollimation? What is your impression of using the system? Sorry, but hat is sound fabrication techniques you've mentioned?

Clear sky, Alexander Yascovich yas@hea.iki.rssi.ru

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