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Wollensak 12mm 2" = Computar 12mm CCTV lens from SurplusShed

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#1 stevek1

stevek1

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Posted 30 June 2020 - 12:14 AM

Strange experience - I bought the 12mm 2" Wollensak eyepiece that was on sale last week at Surplus Shed.  It arrived today and gave some nice views with my Jaegers 5" f/5.  But there was a bit of a rattle, so I looked more closely.  Turns out that the 2" housing surrounds a (repurposed?)  C-mount CCTV lens - a Computar 12mm f/1.2, mounted in reverse (also sold as a separate item by SurplusShed)!.  Screwed right out by hand - the lens has a diaphram and focus ring!  After making sure that the diaphram was wide open, I put it back together (focused to nearest focus to give better position for the telescope R&P).  

 

Raises the interesting question - which came first, the Wollensak or the Computar?

 

https://www.surpluss...tem/L14826.html

https://www.surpluss...h=12mm eyepiece

 

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Edited by stevek1, 30 June 2020 - 12:16 AM.



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