Specifications

contains high-pass Red, Green and Blue filters plus Luminance filter covering
the combined RGB spectral range, blocking IR and UV portion of spectrum for
maximum color accuracy.
Clear (C) filter
Optional clear filter (optical glass with AR coatings) of the same thickness like
RGB filters can be used in addition to (or instead of) Luminance filter to use
maximum chip QE for luminance images. Optical glass is used instead of
simple empty hole in filter wheel to ensure proper focus and to eliminate
refocusing when changing from filtered to unfiltered exposures.
The Clear filer can be also combined with RGB so it is possible to install
CRGB filter set and to leave one empty filter wheel position.
UBVRI filter set
Scientific-grade Schott glass UBVRI filter set in 1.25" cells. This set contains
scientific Blue, Visual, Red and Infra-red filters for photometric applications.
Separate filters
Number of 1.25" filters for narrow-band imaging and other special applications
(UHC, Hα, Hβ, OIII, SII, etc.) are available. Visit our web site for current filter
offering.
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Illustration 8: BVRI filters in 1.25 inch cells