Quote:
Originally Posted by mura_gadi
Hello
I recently acquired a lot of pyrex glass precut at 4-6" discs amongst other bits. The refractor idea has some appeal as it removes the costs of cutting and coating my Dob project glass for which I have a large slab of soda glass.
I am happy to rely on ED ep's to see what results I can get without special coatings on the glass to start with.
I thought I might be able to learn some glass grinding skills via a refractor with the blanks I have, then try the Dob project.
Steve
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Steve,
This is not a trivial exercise and although I am not an expert you will need at least two types of glass with different refractive indexes and they will need to be of optical quality. A mirror avoids those complications.
Paul