[Aavso-photometry] Var Her 04 Update & News

[Michael Koppelman]

Based on my two nights of data my current period is now P=0.0575 +/- 
0.0002. It is about 0.2 fainter on average on 6/29 vs. 6/28.

Plot is here:

http://www.lolife.com/astronomy/VarHer04/

Cheers,
Michael Koppelman
http://www.lolife.com/astronomy/

On Jun 29, 2004, at 12:05 AM, Aaron Price wrote:

>  So far the AAVSO has received a whopping 7,133 CCD time series
> observations. A fourier analysis of the observations using Foster's
> CLEANEST algorithm to help reduce the effects of gaps in the data 
> reveals
> a period of 0.05784 +/- 0.00001 days, in line with Tonny, Mike's and 
> our
> earlier calculations.  The semiamplitude is calculated at 
> 0.0437+/-0.0013
> mags but the fact that superhumps do not exhibit perfectly sinusoidal
> variation and the dips/eclipses make fourier analysis unreliable for
> amplitude calculation in this data set. Visual estimate puts it at 
> around
> 0.2 mag according to the phase diagram but it seems to vary around that
> according to the raw light curves.