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Bausch and Lomb 5" F8 Telestigmat Mounted Airspaced Lens Sold!

Price - $95.00

Ad Number: 104550

Posted: 30 Apr 2017

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This is a Bausch and Lomb 5" F8 Telestigmat Airspaced Lens. Very nice lens mounted in a well machined metal cell. I purchased this for a project that fell through. I think this was designed as an arial camera lens however I have never seen a camera lens like this with air spaced elements. There are three spacers around the edge between two of the elements. Appears to be a triplet lens. Gives a sharp image but I have not tried it at high power. Great RFT lens for sure. A mystery to me however is that although all of these lenses I have seen say F8 on the side at infinity focus they are more like F5. If you mount this for a telescope it will focus at about F5 or a little more. Sold as is for your experimentation. Don't get me wrong though this lens has a lot of potential but I just don't have the time to work on it. A 5" RFT is a very useful telescope as the summer milky way begins to be seen later in the night. Lens looks new.

Price is $95.00 plus $18.00 shipping in the USA.


  • Condition great condition
  • Location 95409

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