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THE ASTRONOMER Electronic Circular No 2979      2014 Feb 08 10.18UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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OUTBURST OF THE RECURRENT NOVA V745 SCO
AAVSO Alert Notice 496 carries news that Ron Stubbings, Victoria, Australia
noted an outburst of V745 Sco at magnitude 9.0 (visual) on 2014 February
6.694UT. It is located at:
RA 17h 55m 22.27s DEC -33 14' 58.5" (2000)

Selected observations reported to the AAVSO:
Feb 06.694, 9.0 (Stubbings); 06.745, 9.0 (Paul Camilleri, Australia);
06.773, 8.66 V +/-0.06 (S. O'Connor, St. Georges, Bermuda, remotely using
iTel17, Siding Spring, NSW, Australia); 7.80903, 10.1 (PEX, A. Pearce,
Nedlands, W. Australia); 07.85833, 10.2 (Pearce); 9.483V +/-0.010 (J.
Hambsch, Mol, Belgium, remotely at San Pedro de Atacama, Chile); 9.515 V
+/-0.009 (Hambsch, remotely);

Dr. Bradley Schaefer (Louisiana State University) suggests that fast
time-series of this nova may be useful to detect possible flaring activity
as was observed during the outburst of U Scorpii in 2010.  He suggests that
coincident time-series by multiple observers would be most useful for such a
study, with a V-filter being preferred.

Charts for V745 Sco may be created using the AAVSO Variable Star Plotter
(VSP) at http://www.aavso.org/vsp.

Previous outbursts occurred in 1937 and 1989. The 1937 outburst was detected
in 1958 (in decline at magnitude 11.0 on 1937 May 11.1 UT; outburst had
occurred within the previous 19 days) by Lukas Plaut on plates taken by
Hendrik van Gent at the Leiden Observatory; the object was announced as Nova
Sco 1937 and later assigned the GCVS name V745 Sco. The 1989 outburst was
detected on 1989 August
1.55 UT by Mati Morel (MMAT, Thornton, NSW, Australia) at visual magnitude
10.4 and in decline.

Congratulations to Rod Stubbings on his detection of the outburst of this
difficult pre-dawn recurrent nova!

Guy M Hurst