[Aavso-photometry] Re: (cba:news) confirming Tonny's period for Var Vul 05

[Lew Cook]

Is this for the combined sets of data or just yours?


On 8/26/05, brian martin <bemart1 at shaw.ca> wrote:
> Tonny Vanmunster wrote:
> 
> >Dear colleagues,
> >
> >I have just completed a detailed analysis of my Var Vul 05 observations from
> >last night (2005, Aug 23/24). The data were obtained under medium quality
> >sky conditions at CBA Belgium Observatory, using a 0.35-m f/6.3 telescope
> >and (unfiltered) ST-7XME CCD camera. The session effectively started at Aug
> >23.85 UT and lasted for 4.4 hours (more images were obtained before and
> >after, but with insufficient S/N level).
> >
> >Instead of stacking the images (which I first did - see my message of this
> >morning), I now processed the individual images, resulting in a total of 117
> >useful observations. The resulting light curve now shows a clear superhump
> >profile. I used a number of different period analysis methods in Peranso
> >(ANOVA, Lomb-Scargle, PDM, CLEANest) and they all show a strong signal at
> >0.058 +/- 0.003 d. The corresponding phase diagram shows a convincing
> >superhump profile. Hence, it is safe to conclude that this object is a new
> >UGSU-type dwarf nova (and maybe even an UGWZ-type dwarf nova). The superhump
> >amplitude is about 0.3 mag.
> >
> >I have published the light curve, period analysis diagram and phase diagram
> >on my web site (www.cbabelgium.com) for further reference.
> >
> >Follow-up time-resolved CCD photometry is strongly encouraged.
> >
> >Best regards,
> >Tonny Vanmunster
> >
> >Tonny Vanmunster
> >CBA Belgium Observatory
> >http://www.cbabelgium.com
> >________________________________________________________
> >PERANSO : The Final Frontier of Period Analysis Software
> >http://www.peranso.com
> >________________________________________________________
> >
> >
> >
> >
> >____________________________________________________________
> >Center for Backyard Astrophysics (CBA) mailing lists
> >http://cba.phys.columbia.edu/communications/mailing-lists/
> >
> >
> >
> 
> Dear colleagues,
> 
> I am pleased to verify Tonny's period of 0.058 +/- 0.003 d for Var Vul 05.  5 hours of photmetry last night reveal a period of 0.056 +/-0.003 d which is consistent with that of Tonny's measurement.  I too used Peranso for time series analysis.
> 
> Regards
> 
> Brian Martin, CBA Alberta
> 
> 
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> 


-- 
Regards, Lew
CBA Concord
http://www.lewcook.com/cbacal.htm