I know you want a ready made beamsplitter, but if you ever want beamsplitters, etc to make a custom device, there are often good toys to play with at
www.surplushed.com
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Originally Posted by Merlin66
Can't seem to find a 28mm Pretoria eyepiece, tried AM etc. Anyone got one for sale or know of any leads??
Also, need a 90 reflection/ 10 transmission beamsplitter about 20 x 20mm will pay or swap for a 50/50 type.
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