Dr. Paula Szkody (University of 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 11:31:18-15:07:25 2011 September 25 UT (the night of Saturday, … Read the rest of this article
Event: Nova in Scorpius
Nova Sco 2011 No. 2 = PNV J16364440-4132340 = PNV J16364300-4132460
Discovered Independently by:
– John Seach (Chatsworth Island, NSW, Australia)
– Yuji Nakamura (Kameyama, Mie, Japan)
Discovery Date: Read the rest of this article
– Seach: 2011 Sep. 06.37 UT (JD 2455810.87)
– …
Following their very successful multiwavelength observing campaign on the dwarf nova SS Cygni in 2010 April (see AAVSO Special Notices #204 and 206 at http://www.aavso.org/special-notice-archive and the related information page at http://www.aavso.org/multiwavelength-observations-ss-cygni), Dr. James Miller-Jones (International Centre for Radio Astronomy … Read the rest of this article
Event: Nova in Lupus – Nova Lupi 2011
Discovered by: Nicholas Brown, Quinns Rocks, Western Australia
[vsnet-alert 13560]
Discovery Date: 2011 August 4.73 UT
Discovery Magnitude: magnitude 10.2 photographic unfiltered, on two films, using a 135F2 cannon lens and tmax 400 film.
Coordinates: R.A. = 14 54 20, Decl. … Read the rest of this article
Dr. Misty Bentz of Georgia State University requests observations of four active galactic nuclei (AGN) for a study of variability in these sources by the STARE Collaboration. She requests BVRcIc filtered photometry of NGC 6814, NGC 7213, NGC 7469, and NGC 1566 from … Read the rest of this article
Ernst Pollmann, Chairman of the VdS-Spectroscopy-Group in Germany and an ative spectroscopist, has requested the assistance of AAVSO photoelectric photometry (PEP) observers in a campaign to observe the S Doradus variable P Cygni through the 2011 observing season.
PEP data are needed for correlation with spectra of … Read the rest of this article
Further to AAVSO Alert Notice 436 (http://www.aavso.org/aavso-alert-notice-436), a fast photometry observing campaign has been initiated by Dr. Bradley Schaefer (Louisiana State University) to monitor the recurrent nova T Pyxidis throughout its current eruption.
Brief summary of eruption: The recurrent nova T Pyx was discovered in … Read the rest of this article
The recurrent nova T Pyxidis has been discovered in outburst. It was detected by M. Linnolt (Hawaii, United States) at a visual magnitude of 13.0 on 2011 April 14.2931 (JD 2455665.7931), and confirmed by A. Plummer (m(vis)=12.2, JD 2455665.8847) and S. Kerr … Read the rest of this article
Event: V5588 SGR = NOVA SAGITTARII 2011 No. 2 = PNV J18102135-2305306
Discovered by: Koichi Nishiyama, Kurume, Japan, and Fujio Kabashima, Miyaki, Japan
Discovery Date: ~ 2011 March 27.832 UT
Discovery Magnitude: unfiltered CCD magnitude mag 11.7 on two 40-s unfiltered CCD frames using a … 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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