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The Lumicon 90-Degree LumiBrite Mirror Diagonal (2") w/ Built-In Filter Holder allows you to enjoy the combined convenience of a filter selector with the quality of an Enhanced Aluminum star diagonal, with both refractors and catadioptric telescopes. Its low-profile design allows you to achieve focus with all.
The typical use for this diagonal is to add a red/green/blue filter and use all 3 for a single exposure with a monochrome CCD camera, later combining the resulting images with software.
This version includes the Lumicon premium LumiBrite optics for 99% reflectivity.
Note: Filters Sold Separately
The Selector-Diagonal Combo
Accepts standard 48mm filters
4 Filter positions
Internally baffled for better imaging
5/8" Low profile design
Works upon all SCTs with 2"-18 rear threaded cells
Accepts filter cells up to 0.225" tall above threadings