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Woohoo, blanks look really good! Great way to finish the week...
Sunfish - Those prices are priced at the cut only I supplied my own glass.
Sydney Glass (Ph 02 97902830) supplies and cuts 25mm glass, they might be worth a try.
A.E.C in South Australia who supply all the ATM'rs needs also offers mirror coating services last I read, so they might be worth a try as well.
I can supply you with a nice 6" Pyrex blank - to meet Rayleigh's rule/criteria that would be a 6" at F8.2 or little under 5' with mirror cells etc if you're looking to mount on a tripod that might be a better option.
Two arguments for that:
1) Why both going to all the hassle when you can get a 6" F8 anyway
2) You can get a 6" F8 very cheaply second hand, that means all the build requirements for the scope are taken care of, tube, base, mirror cell and secondary mirrors holders etc.
While everyone says Pyrex is better due to better thermal properties, soda glass actually takes a better polish/finish than Pyrex does. I am hoping that the better finish will be worth the little extra wait in cool down times.
Last edited by mura_gadi; 06-02-2021 at 08:15 AM.
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