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AAVSO Alert Notice

Alert Notice 505: Monitoring of Northern dwarf novae for radio jets campaign

October 24, 2014: Ms. Deanne Coppejans (PhD candidate, Radboud University Nijmegen (Netherlands) and University of Cape Town) and colleagues have requested AAVSO observer assistance in monitoring several dwarf novae in support of their campaign to observe them in outburst with the Very Large Array (VLA) to search for radio jets.

Alert Notice 504: Epsilon Aur monitoring during predicted pulsation phase

September 17, 2014: Dr. Robert Stencel (University of Denver Astronomy Program) has requested that AAVSO observers monitor epsilon Aurigae from now through the end of the observing season.

Alert Notice 503: Request for regular monitoring of the symbiotic variable RT Cru

August 6, 2014: Dr. Margarita Karovska (Harvard-Smithsonian Center for Astrophysics) and colleagues have requested AAVSO observer assistance in their campaign on the symbiotic variable RT Cru. Weekly or more frequent monitoring beginning now is requested in support of upcoming Chandra observations still to be scheduled.

Alert Notice 502: EE Cep observations requested for upcoming eclipse

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.

Alert Notice 501: Monitoring requested for HST/COS observations of SBS 1108+574

April 29, 2014: Dr. Peter Garnavich (University of Notre Dame) and Dr. Paula Szkody (University of Washington) have requested the help of AAVSO observers in monitoring the cataclysmic variable SBS 1108+574 (= CSS 120422:111127+571239) in support of upcoming Hubble Space Telescope observations. The HST COS (Cosmic Origins Spectrograph) will be carrying out far-ultraviolet spectroscopy of this target on 2014 May 12-13 UT.

Alert Notice 500: Novae in Scorpius and Cygnus

April 2, 2014

1. Nova Scorpii 2014 = TCP J17154683-3128303
2. Nova Cygni 2014 = PNV J20214234+3103296

1. Nova Scorpii 2014 = TCP J17154683-3128303

Event: Nova Scorpii 2014 = TCP J17154683-3128303

Discovered by: Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan)

Discovery magnitude: magnitude 10.1 unfiltered CCD, using a 105-mm f/4 camera lens (+SBIG STL6303E camera)

Alert Notice 498: Nova Cephei 2014 = TCP J20542386+6017077

March 10, 2014:

Event: Nova Cephei 2014 = TCP J20542386+6017077

Discovered by: Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan)

Discovery magnitude: unfiltered CCD magnitude 11.7, using a 105-mm f/4 camera lens + SBIG STL6303E camera

Discovery date: 2014 Mar. 8.792 UT

Alert Notice 497: Nova Sagittarii 2014 = PNV J18250860-2236024 AND Erratum

February 11, 2014

1. Event: Nova Sagittarii 2014 = PNV J18250860-2236024

Discovered by: Sigeru Furuyama (Tone-machi, Ibaraki-ken, Japan) and reported by S. Nakano (Sumoto, Japan)

Discovery magnitude: unfiltered CCD magnitude 8.7, using a 200-mm f/2.8 camera lens + BJ-42L camera

Discovery date: 2014 Jan. 26.857 UT

Coordinates: R.A. 18 25 08.60  Decl. = -22 36 02.4  (2000.0)

Alert Notice 496: Outburst of the recurrent nova V745 Sco

February 7, 2014

Event: Outburst of the recurrent nova V745 Sco

Discovery by: Rod Stubbings (Tetoora Road, VIC, Australia)

Discovery magnitude: 9.0 (visual)

Discovery date: 2014 February 6.694 UT

Coordinates:  R.A. 17 55 22.27   Dec. -33 14 58.5  (2000.0)

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