On the Accuracy of Double Star Measurements from "Lucky" Images, a Case Study of Zeta Aqr and Beta Phe

Details On the Accuracy of Double Star Measurements from "Lucky" Images, a Case Study of Zeta Aqr and Beta Phe On the Accuracy of Double Star Measurements from "Lucky" Images, a Case Study of Zeta Aqr and Beta Phe

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jdso....5...65a&link_type=abstract

Journal of Double Star Observations, vol. 5, no. 1, p. 65-71.

Physics

Scientific paper

The accuracy and reproducibility of measuring double stars from "lucky" images was tested by repeated recordings at consecutive nights of two systems, zeta Aquarii (STF 2909) and beta Phoenicis (SLR1 AB), with current separations of about 2 arcsec and 0.4 arcsec, respectively, using a fast CCD camera at two telescopes (40 cm and 50 cm Cassegrain). By careful selection and superposition of only the best images out of longer sequences, error margins of position measurements were significantly reduced. Standard deviations for the separation of the order of +/-0.01 arcsec were obtained, even under non-optimum seeing conditions.

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