The Lumicon Cassegrain Tele-Extender, LC1035, threads onto male "visual-back" threads (1.375" x 20 tpi), is 3" in length, and presents male T-threads (42mm x 0.75mm) for camera attachment. Used for prime focus photography on Schmidt-Cassegrain telescopes with 1.25" visual-backs.
Home
Photographic Accessories
