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12.5" mirror

Started by blueflagella, 04/08/2004 01:06AM
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Posted 04/08/2004 01:06AM Opening Post
Todd Gray
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Join Date: Mar 2004

Location: Kingsport TN, US

Posts: 45

I am currently purchasing a 12.5" mirror that I will use to make a DOB. The manufacturer is charging me an extra $100.00 to have it made out of pyrex instead of plate glass. This will also cause the wavefront to go from 1/10 with plate to 1/15 with pyrex. My question is it worth the $100 to go with the pyrex or could I save some money with little or no optical sacrifice using more points on mirror cell? How much of the optics will actually be sacrificed?
Thanks
Todd
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Posted 04/08/2004 01:23AM #1
Floyd Blue
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Join Date: Mar 2003

Location: Bakersfield CA, US

Posts: 4913

Spend the $100! The mirror is the heart of the scope, get the best you can.
Floyd
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[SIZE="Large"][/SIZE][COLOR="Blue"][/COLOR] Floyd Blue grin
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