Observations of Three Double Stars with Varied Separations

As part of a summer semester introductory astronomy course, college students meas- ured the position angles and separations of STF 2010AB, STF 2007AB, and STFA 48AB. The averages of our measurements are as follows: STF 2010AB had a ρ and θ of 25.71" and 10.78°. STF 2007AB had a ρ and θ of 38.63" and 320.3°. STFA 48AB had ρ and θ of 42.87" and 147.1°. Students compared recordings with averages of the past ten observations in the Wa sh- ington Double Star Catalog and found that the agreement between our measurements and the past observations improved with increasing separation