[vsnet-alert 3571] 1E 1719.1-1946 first ever recorded outburst

[Patrick Schmeer <extpasc@rz.uni-sb.de>]

Last morning I detected 1E 1719.1-1946 in outburst (mag 15) on an
unfiltered CCD image taken on Oct. 11.098 UT. On a CCD image from
the previous night the object is faint. At my request both Taichi 
Kato and Robert Fried took images of the field that confirm the   
outburst beyond any doubt.

Simbad coordinates for 1E 1719.1-1946: 17:22:04.1 -19:49:09 (J2000.0)
For a finding chart see P. Hertz et al. ApJ 364, 251-258 (1990).
This CV is included in DS93 and DWS97 as 'Oph2'.  

I'll send more details of my observations to vsnet-alert later today.
 
High-speed photometry, spectroscopy, and X-ray observations during
the current outburst (the first ever recorded!) are most urgently 
required.

Regards,
Patrick
 
P.S.:
I thank Robert Fried for taking the CCD image and Taichi Kato for
turning my attention to this interesting cataclysmic variable.
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Subject: [vsnet-chat 1916] CVs from Einstein survey

CVs from Einstein survey

   Among CVs from the Einstein Galactic survey, I have noticed two of
them in ApJ 364, 251 have not been given variable star designations
(others are 1E0830.9-2238 = WX Pyx, 1E1449.7-6804 = BZ Cir).

                    (1950.0)
     name       h  m  s     o  '  "  Vmag Lx/Lopt  Mv  Vo
1E1516.6-6826 15 16 42.8 -68 27 39  17.52  0.85   9.5 12.0
1E1719.1-1946 17 19 06.6 -19 46 17  19.02 10.8   12.6 10.4

    Vo represents the expected magnitude when the system undergoes a typical
dwarf nova outburst.  Are they still worthy of monitoring, or the nature
already revealed?

Regards,
Taichi Kato

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