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: http://lnfm1.sai.msu.ru/~victor/eng/ait/photom.htm
Дата изменения: Thu Oct 4 19:36:52 2001
Дата индексирования: Mon Oct 1 23:22:36 2012
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Four-channel WBVR photometer with dichroic beam-splitter
Optical layout of the photometer.
1 wheel with field apertures, 2 beam-splitter "red/blue",
3 folding prism, 4 beam-splitter "V/R",
5 beam-splitter "W/B",
6 glass filter which forms photometric band,
7 Fabry lens, 8 folding mirror,
9 photocathode of PMT,
10 mirror of wide field viewer,
11 cross-hairs, 12, 13 wide field viewer eyepiece,
14 narrow field viewer prism,
15 this viewer objective, 16 narrow field viewer
eyepiece.
Photometer without top cover is installed
at 60-cm telescope. Telescope is pointed on the sky near Sun. One can see
exit pupile images in B, V, and R channels at PMT shutters.
Response curves of the photometer while
formed photometric band filters are removed. One can see the features of
reflection and transmittance of dichroic films.
View of the photometer at Zeiss-600
telescope of Maidanak astronomical observatory.