30-inch Dobsonian telescope for the Swiss Alps - 30 inch Zerodur mirror
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![Making two matching 30 inch [0.76m] F2.7 telescope mirrors and one telescope](https://www.bbastrodesigns.com/slump/42%20inch%20after%20slumping%20and%20annealing.jpg "Making two matching 30 inch [0.76m] F2.7 telescope mirrors and one telescope")
Making two matching 30 inch [0.76m] F2.7 telescope mirrors and one telescope
Newton reflector telescope secondary mirror 20/25/28/30/40/42/45/50/54/60/70mm | eBay
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The primary mirror of my under-construction 30" f/5 Dob : r/telescopes
30-inch Dobsonian telescope for the Swiss Alps - 30 inch Zerodur mirror
30inch Newtonian Reflector telescope parabolic primary mirror - AliExpress
Thirty Meter Telescope
![Making two matching 30 inch [0.76m] F2.7 telescope mirrors and one telescope](https://www.bbastrodesigns.com/30/30%20inch%20mirror%20on%20test%20stand.jpg "Making two matching 30 inch [0.76m] F2.7 telescope mirrors and one telescope")
Making two matching 30 inch [0.76m] F2.7 telescope mirrors and one telescope
TMT International Observatory
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30-inch Dobsonian telescope for the Swiss Alps - 30 inch Zerodur mirror
