Focus Problems with Burgess Binoviewers

Started by denniris, 02/12/2005 04:22AM
Posted 02/12/2005 04:22AM Opening Post
I am using a Celestron 102GT (500mm f5) with 2" diagonal. I received this scope today with my Burgess Bino, My plan was to install drive on a good sturdy tripod and at some point replace the OTA with a short tube APO. In playing around with this set up I found I could not rack the focuser in far enough to achieve focus with the binos with or without a 2X Barlow. I had expected problems with out the Barlow but not with. With out the Barlow the BBs almost come in to focus just as I run out of in travel and adding the Barlow just seams to make it worse. Is the Burgess 1.5X Relay Lens going to solve this type problem or should I go with my first thought which was to shorten the Optical Tube by 1.5" ?

Any input would be appreciated.

Dennis White
Posted 02/12/2005 05:57AM #1
Dennis,

Try putting the Barlow directly into the telescope and putting a diagonal into the Barlow. Then insert the binoviewer into the diagonal. This should allow you to focus.

Don Durbin
Denk IIs coming UPS
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