Photoelectron counting autoguiding system with variable accumulating time and variable corrective value.

Details Photoelectron counting autoguiding system with variable accumulating time and variable corrective value. Photoelectron counting autoguiding system with variable accumulating time and variable corrective value.

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990acasn..31..382z&link_type=abstract

Acta Astron. Sin., Vol. 31, No. 4, p. 382 - 389

Astronomy and Astrophysics

Astronomy

Guide Systems: Telescopes

Scientific paper

This paper discusses three variants of a photoelectron counting autoguiding system based on half-disc light modulator. The first variant operates with constant accumulating time. The second variant operates with variable accumulating time but constant corrective value, which equals the allowable error of the guiding system. The third variant operates with both variable accumulating time and variable corrective value. Guiding errors and time responses of these three variants are compared. Guiders based on the third variant have been successfully used at the 1.56 m astrometrical telescope and the double-tube 40 cm telescope in Shanghai Observatory. The guiding error measured from the plate is about 0″11.

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