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Old 03-12-2016, 07:27 AM
Stefan Buda
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Stefan Buda is offline
 
Join Date: Jul 2013
Location: Melbourne, VIC
Posts: 823
Quote:
Originally Posted by clive milne View Post
Stefan... have you ever considered moving to a cooler climate?
https://www.kiwistaroptics.com/careers

Incidentally... you might enjoy some of the designs, here:
http://www.cloudynights.com/topic/48...ew-astrograph/

I like the idea of the prescription detailed in post#14 (uses a trepanned C11 primary) 12" clear aperture @ f2.5 and 6 microns in the extreme corners of a 16803 format chip... lots of complimentary radii and only 1 full aperture convex surface. I'd be curious to know what BK7 costs in blanks that size?
Clive,
Even Melbourne too cold for me..
Yes I have seen that CN thread. I prefer the ultra compact formula of the BRH. Especially from a commercial/manufacturing point of view.
Let me know if you find out the cost of BK7 blanks.
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