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GREGORCalibration-Unit |
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GREGORCalibration-Unit |
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Calibration unit for polarimetry. It consists of two rotatable
wheels introducing on demands free field stops, a linear polarizer
and a quarter wave plate, either for visible or for infrared light
into the telescope beam which passes this unit centrally. Drawing: S.M. Bauer |
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Calibration unit for polarimetry. Drawing: S.M. Bauer |
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Calibration unit for polarimetry. Drawing: S.M. Bauer |
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Calibration unit for polarimetry. The field stop wheels
can be rotated as a whole, and the optical elements can
be rotated whithin their mounting. Drawing: S.M. Bauer |
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Calibration unit for polarimetry. Drawing: S.M. Bauer |
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