Auction for a Televue MPT Refractor now ongoing.
With the iris so close to the eyepiece end could one not
call it an adjustable field stop?
I have a 5 inch f/8 with a large adjustable iris in the same position.
With the iris so close to the eyepiece end could one not
call it an adjustable field stop?
I have a 5 inch f/8 with a large adjustable iris in the same position.
Gene Roddenberry "took" television "into" outer space.
