AAVSO Alert Notice 546<br /> Campaign on V1687 Cyg (WR 140)<br /> August 3, 2016 <p>Dr. Noel Richardson (University of Toledo) and colleagues have requested AAVSO assistance in optical monitoring of the bright,
AAVSO Alert Notice 544<br /> Nova in Scorpius<br /> June 13, 2016 <p><strong>Discovered by:</strong> Hideo Nishimura (Kakegawa, Shizuoka-ken, Japan) (reported by S. Nakano, Sumoto, Japan, via CBET 4285)</p> <p><strong>Discovery magnitude:</strong> 12.4 unfiltered CCD on three
AAVSO Alert Notice 539<br /> Dwarf novae observations requested for VLA campaign<br /> March 1, 2016 <p>Ms. Deanne Coppejans (PhD candidate, Radboud University Nijmegen (Netherlands) and University of Cape Town) and colleagues have
AAVSO Alert Notice 538<br /> Observations of V694 Mon (MWC 560) requested for Chandra campaign<br /> February 26, 2016 <p>Dr. Jeno Sokoloski (Columbia University) and Mr. Adrian Lucy (graduate student, Columbia University) have
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
AAVSO Alert Notice 530<br /> Nova Aquilae 2015 = ASASSN 15-qd = PNV J19215012+1509248<br /> October 8, 2015 <p><strong>Event:</strong> Nova Aquilae 2015 = ASASSN 15-qd = PNV J19215012+1509248</p> <p><strong>Independent discovery by:</strong><br /> – Koichi Itagaki
AAVSO Alert Notice 529<br /> Observing campaign on 5 variables in Cygnus<br /> October 1, 2015<br /> <p>Dr. George Wallerstein (University of Washington) has requested AAVSO assistance in monitoring 5 variable stars in
AAVSO Alert Notice 523<br /> Correction to AAVSO Alert Notice 522<br /> July 1, 2015<br /> <p>In <a href="https://www.nightskyobserver.com/aavso-alerts/aavso-alert-notice-522-v404-cyg-hst-multiwavelength-observations-scheduled/">AAVSO Alert Notice 522</a> on the upcoming observations of the black hole X-ray binary V404
AAVSO Alert Notice 522<br /> V404 Cyg HST multiwavelength observations scheduled<br /> July 1, 2015<br /> <p>The dramatic outburst of the black hole X-ray transient LMXB V404 Cyg continues. It was detected 2015
AAVSO Alert Notice 520<br /> X-ray nova and LMXB V404 Cyg in rare outburst<br /> June 18, 2015<br /> <p>V404 Cyg, an X-ray nova and a low mass X-ray binary (LMXB) with black