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Posts Made By: Dennis Shell

September 22, 2002 02:52 AM Forum: Equipment Talk


Posted By Dennis Shell

Does anyone know how to contact Astrosystems - Ithink they sell dew constrol systems.

January 23, 2003 04:01 PM Forum: Antique/Classic/Vintage Optical Instruments

6" f-13 refractor

Posted 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 cell

Posted By Dennis Shell

where can one buy a 6" refractor lens cell?