A Simple Circuit for the Remote Control of a Rotary Chopper

Details A Simple Circuit for the Remote Control of a Rotary Chopper A Simple Circuit for the Remote Control of a Rotary Chopper

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..150d&link_type=abstract

Publications of the Astronomical Society of the Pacific v.100, p.150

Astronomy and Astrophysics

Astronomy

Instruments, Infrared

Scientific paper

An electronic circuit for the remote-control of a rotary chopper is presented. When the chopper is stopped, the circuit automatically sets the position of the blade out of the way of a light beam crossing its plane. This is useful in situations where the light from the telescope is modulated by a wobbling secondary but that from a calibration lamp must be fed into the optical path and modulated by a rotary chopper.

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