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photometry

Special Notice #367: Outburst of the UGWZ star UZ Bootis

July 26, 2013

Carey Chiselbrook (CCY; Georgia, United States) reports via the AAVSO Forums that the WZ Sge-type variable UZ Bootis is in outburst.  It was observed visually at magnitude 12.8 on 2013 Jul 26 02:00 UT (JD 2456499.58194).  The outburst was confirmed by Walter MacDonald (MDW; Ontario, Canada) imaged the field and found UZ Boo at V=12.69 03:25 UT (JD 2456499.6394).  Observations of UZ Bootis -- both visual estimates and CCD time series -- are encouraged throughout the outburst.

Alert Notice 486: Spectroscopy and photometry campaign on three bright Wolf Rayet stars

June 26, 2013: Dr. Noel Richardson (Université de Montréal) is helping coordinate a very large ProAm campaign (over 20 professional and amateur astronomers) this summer on three bright Wolf Rayet stars in Cygnus. Dr. Richardson, fellow co-PIs Drs. Tony Moffat (Université de Montréal), Nicole St.-Louis (Université de Montréal), and Thomas Eversberg (Schnoerringen Telescope Science Institute, Waldbroel, Germany), and their colleagues invite AAVSO spectroscopists and photometrists to participate in this campaign.

Alert Notice 478: Transformed photometry of young stars in Cha requested

January 16, 2013: Dr. Péter Ábrahám (Konkoly Observatory, Budapest, Hungary) has requested the assistance of AAVSO observers in monitoring eight young stars in Chamaeleon in support of photometry he and his colleagues will be obtaining with the VLT/ISAAC (infrared) and Herschel Space Observatory (far-infrared) during January-February 2013.

Alert Notice 476: Multicolor photometry of triple system b Per requested

January 4, 2013: Dr. Bob Zavala (U.S. Naval Observatory, Flagstaff) has requested AAVSO assistance in obtaining multicolor photometry of the bright triple system b Per in order to prepare for and detect a possible eclipse of the AB components by the C component predicted for 2013 January 23. At 4.5V, b Per, which is also a radio source, is an excellent target for photoelectric photometrists and DSLR observers.

Citizen Sky Workshop to Produce a DSLR Photometry Manual

The Citizen Sky Project - Workshop III

Sponsored by:
The National Science Foundation and
The American Association of Variable Star Observers

When and Where:

The 3rd Citizen Sky Project Workshop will be held Friday-Sunday, March 22-24 at AAVSO Headquarters in Cambridge, MA.  We will kick-off the 3-day workshop with a meet-and-greet the evening of Thursday, March 21st. 

Goals and Structure:

Alert Notice 472: Monitoring of HD 5980 requested for multiwavelength campaign

October 19, 2012:  Dr. Noel Richardson (Universite de Montreal, formerly at Georgia State University) has requested monitoring of the Small Magellanic Cloud eclipsing binary HD 5980 (in Tucana) as part of a multiwavelength campaign he is coordinating to study this unusual system. Dr. Richardson writes:

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