Some of the best opportunities for contributing to astronomical research come through the AAVSO's Observing Campaigns, which are observing projects requested by individual researchers with a specific goal in mind. Some Campaigns are designed to last for a long time, and the results aren't known until well after the campaign concludes. But some campaigns pay off immediately. Our campaign on the bright star b Persei is an example of the latter, with a handful of AAVSO observers getting exactly the right data, at the right time, right away!
January 16, 2015: We have been informed by PI Dr. Matthew Muterspaugh that his campaign on alpha Com (AAVSO Alert Notice 506) has been cancelled. Position measurements published a century ago contained errors that affected the predictions for the time of eclipse.
More information will be coming from Dr. Muterspaugh and we will disseminate it to everyone in an Alert Notice, but he asked that the observer community be informed now so that observing efforts might not be wasted.
December 5, 2014: Drs. Matthew W. Muterspaugh and Gregory W. Henry (Tennessee State University) have requested AAVSO observers' assistance in monitoring the possible Algol-like binary star alpha Com before, during, and after the eclipse they have predicted for mid-to-late January 2015.
July 24, 2014:The eclipse of EE Cep (AAVSO Alert Notice 502) appears to be gradually beginning, according to observations in the AAVSO International Database. Please observe this system according to the instructions given in the Alert Notice.
July 9, 2014: The AAVSO requests observations for the upcoming eclipse of EE Cephei, a long-period eclipsing variable. EE Cep has a period of 2,050 days, and shows strong variations in the eclipse light curve from one event to the next. Observations are needed to study the morphology of the upcoming eclipse, which will be used to better understand the shape of the eclipsing disk and how it precesses. Mid-eclipse is predicted to be August 23, 2014, but the early stages of the eclipse may begin as much as a month earlier.
1. NEW ALERT NOTICE PUBLICATION POLICY
2. POSSIBLE NOVA IN AQUILA
3. NEW POSSIBLE CATACLYSMIC VARIABLE IN NORMA
4. REQUEST TO MONITOR THE CV SDSS 013132 FOR HST OBSERVATIONS
5. V2291 OPH ECLIPSE PEP CAMPAIGN
6. TU CAS VISUAL + PEP + CCD CAMPAIGN
1. NEW ALERT NOTICE PUBLICATION POLICY
February 6, 2013: According to photometry provided by Don Collins (CDK, Swannanoa, NC), the eclipse in the b Per system (HD 26961), predicted for around 2013 January 25, is underway now and began February 4-5. Photometry - multicolor if possible - is urgently needed now to cover the rest of this eclipse, which may last for up to four days altogether, and see post-eclipse behavior of the system.
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.
July 5, 2012: Scotty Degenhardt (Santa Fe, NM), a pioneer in the use of video for timing eclipses of solar system and stellar objects and a research member of the International Occultation Timing Association (IOTA), has informed the AAVSO of a research project he and colleagues are working on: modeling the Jovian dust field, moon atmospheres, and Io’s Torus through Jovian Extinction Events (JEE). He has invited AAVSO observers to participate by observing these Jovian extinction events and reporting their observations.
June 25, 2012: Dr. Eric Mamajek (Cerro Tololo Interamerican Observatory and University of Rochester) has requested AAVSO observers' assistance in monitoring the young star 1SWASP J140747.93-394542.6 to help determine the eclipse behavior related to a transiting ringed substellar companion.
This observing campaign begins now and continues until further notice. Dr. Mamajek writes: