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For fans of wide-field imaging with CCD cameras,
the IDAS type 3 LRGB filter sets are available
in an integral filter holder and 35mm camera
lens adapter. The filters are 35.5mm in
diameter, and the adapter has provision for
stacking an additional 35.5mm filter for
special applications.
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Telescope users: Note that this lens adapter
and filter set have the additional benefit of
placing the CCD chip at the same distance
behind the camera flange as 35mm film. This
insures that your chip is at the proper
distance behind any flattener or focal reducing
optics in your telescope which was designed for
film imaging.
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