Notes on the filter magnetograph project

Nikolai I. Kobanov; Victor M. Grigoryev

doi:10.1117/12.259715

25 November 1996 Notes on the filter magnetograph project

Nikolai I. Kobanov, Victor M. Grigoryev

Proceedings Volume 2804, Missions to the Sun; (1996) https://doi.org/10.1117/12.259715
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A simple design is proposed for a filter magnetograph, based on the bichromatic image methodusing magnetooptic filter. The scheme ensures an optimal harnessing of the light flux and the computermemory. A push-pull modulation, utilized in the instrument, is readily adjusted to CCD operating in the mode of a two-step image detector. There is good reason to hope that the signal/noise ratio can be improved considerably. In whole disk observations the magnetograph provides measurements of the general magnetic field simultaneously with a usual magnetogram. The possibility that the proposed magnetograph can be operated in the mode of measuring the steepness of the spectral line wing, is considered. This would contribute, in these authors' opinion, to more reliable calibration of conventional filter magnetograms as well as aiding a more correct evaluation of theintegral magnetic field flux in areas of the image with a transverse field and mixed polarity. Keywords : magneto-optical filter , magnetograph

Citation Download Citation

Nikolai I. Kobanov and Victor M. Grigoryev "Notes on the filter magnetograph project", Proc. SPIE 2804, Missions to the Sun, (25 November 1996); https://doi.org/10.1117/12.259715

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KEYWORDS

Modulation

Magnetism

Micro optical fluidics

Modulators

Polarizers

Charge-coupled devices

Image filtering

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