Four-channel WBVR photometer with dichroic beam-splitter
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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. | ||
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Response curves of the photometer while
formed photometric band filters are removed. One can see the features of
reflection and transmittance of dichroic films.
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View of the photometer at Zeiss-600
telescope of Maidanak astronomical observatory.
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