[vsolj-alert 687] 1E 1719.1-1946 at supermaximum?

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

1E 1719.1-1946 at supermaximum?

　まだ確認が必要なようですが、superoutburstの可能性が高いようです。明け方
　なので簡単には観測できないかも知れませんが。

From: "Tonny Vanmunster" <tonny.vanmunster@pi.be>
Subject: [vsnet-alert 4659] RE: 1E 1719.1-1946 at supermaximum?

Patrick,

I just finished analysing a CCD run on 1E 1719.1-1946, which I obtained 
at CBA Belgium Observatory on Apr 19/20, 2000, using my 0.35-m f/6.3 
telescope (unfiltered). The light curve supports your suggestion that 
the present outburst indeed is a supermaximum, as the curve shows part 
of (likely) a superhump - amplitude at least 0.3 mag. Unfortunately, the 
time basis of the observation was too short (object too low in Belgian 
morning sky) to derive any period.

It makes no sense for me to continue monitoring this object, given the 
low altitude, unless there's support from other observatories, willing 
to take over after I have to shutdown the observatory at dawn.

Magnitude estimate : 20000420.1242 UT, 14.4

Best regards,
Tonny Vanmunster
CBA Belgium Observatory

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