Filter wheel for five 2 inch threaded filter cells
Because the filter wheel is not necessary for some applications (e.g. in
microscopy), a version of G3 camera without filter wheel is also offered. Make
sure you choose the variant with filter wheel included, even if you plan to use
own filters and you order camera without LRGB filters.
G3 cameras without filter wheel do not allow later installation of the internal
filter wheel. They can be only attached to external filter wheel. It is of course
possible to supply a camera intended for installation of the internal filter
without the wheel, but it is necessary to state such requirement in the camera
order.
It is not possible to install internal filter wheel into G4 camera head. G4
cameras can be used with external filter wheel only.
Another filter wheel can be also ordered separately. Replacing the whole filter
wheel is easier than replacing individual filters. It is possible to thread for
instance LRGB filter set into one wheel, BVRI set into second wheel and
narrow-band filters (H
α
, OIII, ...) into the third one.
LRGB filter set
High quality 2" LRGB filter set optimized for CCD imaging. This set 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.
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