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Triplet history

Started by Guy Jordan, 07/19/2004 09:01PM
Posted 07/19/2004 09:01PM Opening Post
Can anyone give a history of triplet refractor objectives? I'm curious when the color corection got good enough to warant the "APO" moniker. I assume this is when triplets sarted out but I somehow doubt RC started it all in 1981(?) when I read the piece in Sky and Telescope about his oiled triplet lens at an ATM event.

Or, maybe this has been done to death and one of you could point me to a web address?


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