[Aavso-photometry] Software for ToM calculation (Pedro Pastor)

[Shawn Dvorak]

Pedro Pastor wrote:
> Thank you very much Kazuo, Bob, and Tom,
>
> I got to know AVE but this software only looks for the period but it doesn't
> calculates the precise time instant for the minima (or the maxima) of a
> light curve. It happens the same as for Peranso software (in fact both share
> a great deal of functionality). Also, both applications lack the ability to
> deal with eclipsing binaries. They are not aware of the "double cycle"
> feature (2 min. and 2 max.), and thy provide a period (aprox) half the real
> one ?¿?
>
> I didn't know about Bob Nelson collection of software tools. I'll give them
> a try to see if some package fulfils my needs.
>
> My needs are to work out an ephemeredes equation from a set of light curve
> points. I mean, I'd like to get a "initial time instant" point and a
> "period" factor in order to predict future events (together with the
> determination of the uncertainty for both parameters).
>
> Best wishes for the New Year.
>
> Pedro 
>
> -----Mensaje original-----
> De: aavso-photometry-bounces at mira.aavso.org
> [mailto:aavso-photometry-bounces at mira.aavso.org] En nombre de
> tom_krajci at tularosa.net
> Enviado el: lunes, 24 de diciembre de 2007 23:56
> Para: aavso-photometry at mira.aavso.org
> CC: tom.krajci at gmail.com; tom_krajci at tularosa.net
> Asunto: Re: [Aavso-photometry] Software for ToM calculation (Pedro Pastor)
>
>   
>> From: "Pedro Pastor" <pps at dlsi.ua.es>
>>
>> I'm looking for some software that performs ToM calculation for 
>> eclipsing binaries.
>>
>> Could anybody provide me some information? I would appreciate any 
>> comments about the software performance and usability, if you have 
>> experience using it.
>>     
>
> I use ´minima´ at:
> http://members.shaw.ca/bob.nelson/software1.htm
>
> It allows you to determine ToM six different ways, and uses a simple text
> file format.  Example files are provided so that you can practice with them
> and see how different techniques work on different shape eclipse light
> curves.
>
> Bob has produced a whole set of useful tools for EB work...predictions, ToM
> extraction, etc.
>
> And he´s still updating the software if you find bugs.
>
> Tom Krajci
> Medellin, Colombia
>
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>   
Pedro,

For known EBs you could use the ephemerides generator at 
http://www.rollinghillsobs.org/perl/calcEBephem.pl.  The epoch 
information is not as up-to-date as I'd like, but it does allow you to 
calculate ToMs visible from your location.

Shawn Dvorak