AAVSO Alert Notice 420:Event: Nova in Sagittarius (V5586 Sgr = Nova Sgr 2010 No. 2)
Discovered By: Koichi Nishiyama, Kurume, Japan, and Fujio Kabashima, Miyaki, Japan
Discovery Date: Apr. 23.782 UT using a 105-mm f/4 camera lens (+ SBIG STL6303E camera)
Discovery Magnitude: unfiltered CCD … Read the rest of this article
According to CBET 2199, 2204, and 2205, the suspected symbiotic star V407 Cyg has been observed in an anomalously bright outburst, and subsequent spectroscopic observations by multiple observers show clear signs of a classical nova. Observations of this anomalous event are requested immediately, and observers are asked to … Read the rest of this article
AAVSO Alert Notice 418:Further to Alert Notice 417, the AAVSO requests intensive monitoring observations of the cataclysmic variable V842 Cen beginning immediately (2010 March 12.5 UT; JD 2455268.0) and continuing through 2010 March 19 (2455274.5). These observations are in support of the Hubble Space Telescope … Read the rest of this article
Dr. Paula Szkody (U. Washington) has requested the help of AAVSO observers to provide monitoring of two cataclysmic variables, GW Lib and V842 Cen, in support of Hubble Space Telescope observations in March 2010. Observations of both objects are … Read the rest of this article
Dr. Axel Schwope (Astrophysikalisches Institut Potsdam) requests time-series monitoring of the magnetic cataclysmic variable V405 Pegasi, beginning 2009 December 28 (JD 2455193.5) and continuing through 2009 December 30 (JD 2455196.5). These observations are requested in support of a planned XMM-Newton observation of V405 Peg on 2009 December … Read the rest of this article
Further to Alert Notice #353 (July 11, 2007), Dr. Markus Boettcher (OhioUniversity) requests optical observations of the blazar 3C 66A during its current high state. Optical observations will support gamma-ray observations by the VERITAS telescope in Arizona. All observations, including visual estimates and CCD photometry … Read the rest of this article
Dr. Robert Stencel (Denver U.) requests enhanced coverage of the bright, long-period eclipsing binary star epsilon Aurigae through Wednesday. Observations are requested beginning immediately (October 29, 2009; JD 2455134) and continuing through November 5, 2009 (JD 2455141). This request is in conjunction with scheduled observations with the … Read the rest of this article
Event: Nova in Sagittarius (V5584 Sgr = N Sgr 2009 No. 4)
Discovered By: Koichi Nishiyama, Kurume, Fukuoka-ken, Japan, and F. Kabashima, Miyaki-cho, Saga-ken, Japan
Discovery Date: Oct. 26.439 UT (two frames from Oct. 26.439 and 26.440)
Discovery Magnitude: unfiltered CCD magnitude 9.3, using a … Read the rest of this article
The WZ Sge-type dwarf nova EG Cancri has been reported in outburst by Ian Miller (Swansea, Wales). He reported EG Cnc at m(CV) = 14.3 on 2009 October 12.138 (JD 2455116.638). Subsequent unfiltered time series observations by Miller reported to the AAVSO confirm EG Cnc … 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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