AstrosystemsPosted By Dennis Shell |
Does anyone know how to contact Astrosystems - Ithink they sell dew constrol systems.
Posts Made By: Dennis Shell
September 22, 2002 02:52 AM
Forum:
Equipment Talk
January 23, 2003 04:01 PM
Forum:
Antique/Classic/Vintage Optical Instruments
6" f-13 refractorPosted By Dennis Shell |
Has anyone ever heard of the "Jena Optical Co., Germany"? I have a 6" refr with those words stamped on the end of the cell. its quite old, w/alumn tube and alumn cell, brass focuser. (cant find any reference to "Zeiss").
November 28, 2006 01:43 AM
Forum:
Telescope Making
ens cellPosted By Dennis Shell |
where can one buy a 6" refractor lens cell?
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