AAVSO Alert Notice 537: Observations of a Secondary Eclipse of B Persei RequestedAAVSO Alert Notice 537: Observations of a Secondary Eclipse of B Persei Requested
AAVSO Alert Notice 537<br /> Observations of a secondary eclipse of b Persei requested<br /> February 26, 2016 <p>Dr. Donald F. Collins (AAVSO member, Swannanoa, NC), Dr. Robert Zavala (US Naval Observatory, Flagstaff