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20" mirror blank

Started by Justin Parish, 08/10/2003 09:09PM
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Posted 08/10/2003 09:09PM Opening Post
Justin Parish
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Join Date: Feb 2003

Location: Tyler TX, US

Posts: 27

Hello All,
I am the President of the Astronomical Society of East Texas. We recently received a 20" scope without optics for a donation, so we thought we would grind our own 20" mirror blank. How much would one of those cost and where can we buy one?
Thanks and Clear Skies,
Justin Parish
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Posted 08/10/2003 10:24PM #1
Preston Engebretson
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Join Date: Apr 2002

Location: Houston TX, US

Posts: 69

Justin, You can find a variety of differing types of blanks at
Newport Glass...and they can pregenerate the curve, very handy
with a blank of that size. There are others, but I've not done business with them...

Preston
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