Double Star Data The Uneven Double Stars Project EPSILON BOÖTIS The component stars of the bright double Epsilon Boötis, with a separation of 3.0″ and a magnitude difference of 2.0, can be split with 60 mm of aperture. 28 November 2015 sky & telescope POSS-II / STSCI / CALTECH / PALOMAR OBSERVATORY Contribute your data to this ongoing observing endeavor.