A Guide to Choosing Astronomy Eyepieces for Binoviewers

Alan Gee Baader/Zeiess Giant Binocular Configuration

Alan Gee Baader/Zeiss Giant Binocular Configuration

The above schematic shows the layout required for using the Alan Gee II with the Baader/Zeiss Giant Binoviewer.  Note:  the telecompressor will be retained by the T-2 changer, but not completely constrained.  This is normal, and once the binoviewer is locked into place, the telecompressor will be securely clamped.

The following parts will be required, in addition to those supplied with the binoviewer (from Astro-Physics) and Alan Gee Mark II Telecompressor:

Short T-Adapter (order # T2-21)

T-2 Extension Tube 40mm (order # T2-25B)