The cataclysmic variable NSV 1436 has been discovered in outburst. This is the first bright outburst of this star observed since 1948, and followup observations are strongly encouraged. Little is known about the nature of NSV 1436, and observations may help shed light on whether the star is an … Read the rest of this article
AAVSO Alert Notice 433Dr. Paula Szkody, University of Washington, has requested our help Read the rest of this article
in monitoring the cataclysmic variable GW Lib for upcoming Hubble Space Telescope observations, scheduled to be made during the week of 2011 April 7-11 UT. Dr. Szkody also observed this object with …
Dr. Kirill Sokolovsky (Max-Planck-Institut fuer Radioastronomie, Bonn) has requested the assistance of AAVSO observers to obtain optical photometry of the blazar-type quasars 3C 273 and 3C 279 during 2011. The observations obtained by AAVSO observers will be combined with multiwavelength observations – from … Read the rest of this article
Dr. Michael David Hicks (Jet Propulsion Laboratory) contacted the AAVSO requesting precision photometry of three solar system objects in support of NASA’s DAWN mission to Vesta. These objects, called “Vestoids”, are near-Earth objects with similar reflectance spectra to Vesta itself, suggesting they may be fragments of … Read the rest of this article
Monitoring requested of the peculiar cataclysmic variable FS Aur
Dr. Vitaly Neustroev (U. of Oulu, Finland) requests continuous, nightly monitoring of the cataclysmic variable FS Aurigae during the current (2010-2011) observing season to clearly define the start and end times of several consecutive dwarf nova … Read the rest of this article
The AAVSO requests ground-based observations of the Trapezium region of the Orion Nebula (M42), along with surrounding regions in Orion, in conjunction with upcoming observations with the MOST Satellite. All AAVSO observers are encouraged to participate in this project, and we are requesting observations … Read the rest of this article
Rescheduled request for observations of V455 AND in support of HST observations
October 5, 2010
As originally announced in AAVSO Alert Notice 423, Dr. Paula Szkody (U. Washington) has requested the help of AAVSO observers in monitoring the WZ Sge-type cataclysmic … Read the rest of this article
Dr. Colin Aspin (U. Hawai’i) has requested the help of AAVSO observers in performing long-term photometric monitoring of the two new young stellar objects (YSOs) in Cygnus, HBC 722 and VSX J205126.1+440523 (see AAVSO Special Notice #216).
Dr. Aspin requests calibrated, transformed BVRI photometry to precisely monitor … Read the rest of this article
Dr. Paula Szkody (U. Washington) has requested the help of AAVSO observers in monitoring the WZ Sge-type cataclysmic variable V455 And in support of Hubble Space Telescope ultraviolet spectroscopic observations scheduled for 6:55-15:20 2010 September 11 UT (the night of Friday, September … Read the rest of this article
An observing campaign is being carried out on M31_V1, the first variable star discovered in M31 by Edwin Hubble. Dr. John Grunsfeld, Deputy Director of the Space Telescope Science Institute, plans to observe M31_V1 with the Hubble Space Telescope (HST), and needs to plan … Read the rest of this article
The Sun Now (Visible light)
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The Sun Now (H-Alpha light)
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Aurora Oval
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Aurora Oval
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