AAVSO Alert Notice 493: Request to Monitor BP Tau in Support of Chandra X-Ray ObservationsAAVSO Alert Notice 493: Request to Monitor BP Tau in Support of Chandra X-Ray Observations
AAVSO Alert Notice 493<br /> Request to monitor BP Tau in support of Chandra X-ray observations<br /> December 18, 2013 <p>Dr. Hans Moritz Guenther (Harvard-Smithsonian Center for Astrophysics) has requested nightly observations of
