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This diagonal is built in the USA around a quartz flat with gold reflective coating and a protective quartz overcoat. The 2" diagonal will take 2" eyepieces.
Mirrors are guaranteed to have interferometry results of at least 1/20th wave. Each quartz piece has a serial number. Each diagonal comes with an interferogram with the results of the surface testing for the quartz in your diagonal.
The cost for the 2 inch gold coated diagonal is $815.
This diagonal is built in the USA around a quartz flat with gold reflective coating and a protective quartz overcoat. The 2" diagonal will take 2" eyepieces.
Mirrors are guaranteed to have interferometry results of at least 1/20th wave. Each quartz piece has a serial number. Each diagonal comes with an interferogram with the results of the surface testing for the quartz in your diagonal.
The cost for the 2 inch gold coated diagonal is $815.