Astrometric Measurements of Brisbane Observatory Double Stars, BSO1 to BSO22 with Analysis Using GAIA data

Abstract

Updated astrometric measurements for Brisbane Observatory (BSO) double stars BSO1 to BSO22 are reported. BSO1 to BSO22 were observed using the Las Cumbres Observatory (LCO) Global Telescope Network Node at Cerro Tololo Inter-American Observatory. Images were obtained and analysed using the software AstroImageJ to determine separation, position angle and delta magnitude. Using GAIA DR3 parallax data, the physical distance separation (instantaneous distance) was calculated using the parallax data and the measure of apparent separation reported in this paper. The Harshaw score and Buccheim distance probability were also calculated. E_binding was calculated for pairs with the necessary data.