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| subject: | Re: ATM Astigmatism on 20 inch thin mirror |
From: "Bob May" To: "atmlist" Reply-To: "Bob May" Eric, your mirror is so stiff compared to the approximately 25:1 that is being discussed that you won't have a problem with flexing but you may have a problem if you don't keep the mirror and tool properly rotating as you grind and polish. Any errors that you may have will be on the 1/100th wave or less from the glass flexing. Bob May http://nav.to/bobmay bobmay{at}nethere.com NEW! http://bobmay.astronomy.net --- BBBS/NT v4.00 MP* Origin: Email Gate (1:379/1.100) SEEN-BY: 633/267 270 @PATH: 379/1 633/267 |
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