FYI Scopes with SiC mirrors exist, as a commercial product - here https://apertureos.c...ucts/small-sat/
Shudder to think what these cost, but it would be really interesting to see one on the field one day.
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Posted 25 October 2020 - 06:22 PM
Yep... I know they are out there (really out there as in space), which means the technology works and has major advantages! I am more interested in if it can be moved into consumer telescopes or ATM. This technology will probably come to terrestrial telescopes at some point because it will make bigger mirrors cool faster, remain more dimensionally stable and maybe even lighter.
Oh, and I did not want to hijack your thread.
And if any one just wants to try grinding a 5" mirror (pretty thin but would probably still work)(thicker and larger is available from China)
Posted 25 October 2020 - 08:57 PM
Edited by hakann, 25 October 2020 - 09:13 PM.
Posted 25 October 2020 - 10:42 PM
Yep... I know they are out there (really out there as in space), which means the technology works and has major advantages!
Advantages for micro-gravity requirements, not so much for terrestrial use.
Posted 26 October 2020 - 03:58 PM
No not expense - the advantages don't scale down to terrestrial use and needs - compared to the difficulty (hence expense) of manufacture, to make them widely adoptable. More like bragging points than pivotal.
Posted 04 November 2020 - 06:24 AM
consider casting the slip and then putting it in a vacuum chamber to degas it? we used to do this when casting rubber pull a 29 inch vacuum and slowly release the vacuum 2 times and hold it for 10 min the 3rd time very slowly let the air back in.
Posted 22 November 2020 - 01:32 AM
Edited by Earthbound1, 22 November 2020 - 02:31 AM.
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