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80 mm objective in 90 mm tube ???

Started by AstroKwang2, 07/30/2002 04:36PM
Posted 07/30/2002 04:36PM Opening Post
I was thinking of purchasing a 80 mm achromat lens
assembly to put in a 90 mm tube. Does anybody
have any suggestions as far as how to properly
compensate for the difference in diameters?

Would a wood ring (oak?) be a bad choice?