[vsnet-alert 25541] NSV 3240: new long period SU UMa-type dwarf nova

[tonny.vanmunster@gmail.com via vsnet-alert]

Dear colleagues,

 

I have just finished analysing my unfiltered CCD observations of NSV 3240,
obtained tonight 2021, Mar 13/14 at CBA Extremadura Observatory, using a
0.40-m f/5.1 telescope and SX-46 CCD camera under clear skies. 

 

Regular superhumps with an amplitude of 0.24 mag are clearly visible in the
resulting light curve, establishing NSV 3240 as a new SU UMa-type dwarf
nova. A period analysis using the ANOVA, Lomb-Scargle,
Generalized-Lomb-Scargle and PDM methods (Peranso 3.0), yields a combined
long superhump period of 0.0950 +/- 0.0018d. The object was at mag CV = 15.5
on Mar 13th.

 

I will send my observations to AAVSO, CBA and VSNET for further analysis.

 

Thanks to Taichi Kato and Patrick Schmeer for announcing the outburst.

 

Best regards

Tonny

 

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Tonny Vanmunster

CBA Belgium Observatory

CBA Extremadura Observatory

 <http://www.cbabelgium.com> www.cbabelgium.com

 

PERANSO : The Light Curve and Period Analysis Software

www.peranso.com <http://www.peranso.com> 

 <http://www.peranso.com>