Scintillation Reduction Method for Photometric Measurements

Details Scintillation Reduction Method for Photometric Measurements Scintillation Reduction Method for Photometric Measurements

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasp..110.1235r&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 110, Issue 752, pp. 1235-1248.

Astronomy and Astrophysics

Astronomy

8

Techniques: Photometric

Scientific paper

We explore the reduction of scintillation via differencing signals from binary stars. Theory has been extended to include temporal and angular separation effects simultaneously. For meter-class telescopes, scintillation for a 2" binary is reduced by greater than a factor of 3. Aperture averaging for differential scintillation had a D^-1.4+/-0.1 dependence for exposure times <=0.25 s versus D^-1.1+/-0.1 for absolute scintillation. For 1.5 m diameter telescopes, the influence of binary separation on differential scintillation for theta<5^'' went as theta^0.6 for instantaneous scintillation and rose slightly with exposure time. If the deconvolution problem can be solved, differencing signals from binary stars offers the potential for increased photometric accuracy.

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