The vector magnetograph of the Sayan Solar Observatory

Details The vector magnetograph of the Sayan Solar Observatory The vector magnetograph of the Sayan Solar Observatory

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985svmf.nasa..231g&link_type=abstract

In NASA. Marshall Space Flight Center Meas. of Solar Vector Magnetic Fields p 231-256 (SEE N85-29869 18-92)

Physics

Optics

4

Electro-Optics, Magnetic Signatures, Photometers, Polarization (Waves), Solar Magnetic Field, Solar Observatories, Spectroscopic Telescopes, Computer Programs, Crystals, Design Analysis, Electric Potential, Errors, Spectrographs

Scientific paper

The problem of choosing an optimum scheme for the electrooptical analyzer of polarization and related control principles are discussed. An electrooptical deflector, which is advantageously used to employ a single photodetector and to remove systematic errors inherent in magnetographs with two photodetectors in the wings of the line is discussed, as well as adjustment errors of optical elements of the polarization analyzer and errors of control voltages. A method for measuring the telescope's polarization matrix, reduction of magnetographic measurements for instrumental polarization and calibration of magnetograph channels are examined. Questions of evaluating scattered light and of reducing magnetic field measurements are also considered as a computational procedure for the magnetic field vector parameters is briefly outlined. Computer control of the solar magnetograph and of the processing and control system software is discussed.

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