[Aavso-photometry] Re: [baavss-alert] RE: (cba:news) RE: New CV: SDSS J170213.26+322954.1 outburst

[David Boyd]

Dear Arto and Jeremy,

The tentative ephemeris I circulated earlier today

JD 2453648.33832 + 0.10013E

predicts that the eclipses you both saw should be at

JD 2453649.23949 = 17:45UT
JD 2453649.33962 = 20:09UT

Looks like we are close to that. We should eventually be able to get a very 
accurate measure of Porb.

There is clearly a change in the position of maximum light relative to the 
orbital period between my observation and Arto's. Are we seeing superhumps?

Total cloud here tonight unfortunately.

Regards
David

----- Original Message ----- 
From: "Jeremy Shears" <bunburyobservatory at hotmail.com>
To: <cvnet-outburst at yahoogroups.com>; <aavso-photometry at aavso.org>
Cc: <baavss-alert at yahoogroups.com>; <cba-news at cba.phys.columbia.edu>
Sent: Wednesday, October 05, 2005 10:11 PM
Subject: [baavss-alert] RE: (cba:news) RE: New CV: SDSS J170213.26+322954.1 
outburst


> Conditions are not ideal in NW England this evening (2005 Oct 5), but I
> carried out time resolved photometry from 19.14 to 20.37 UT (clouded out at
> that point). I caught a complete eclipse and preliminary analysis shows the
> eclipse centred on 20.09 UT.
>
> Best regards,
> Jeremy Shears,
> Cheshire, UK
>
>
>
>>From: <Arto.Oksanen at tietoenator.com>
>>Reply-To: <Arto.Oksanen at tietoenator.com>
>>To: <cvnet-outburst at yahoogroups.com>, <aavso-photometry at aavso.org>
>>CC: <baavss-alert at yahoogroups.com>, <cba-news at cba.phys.columbia.edu>
>>Subject: (cba:news) RE: New CV: SDSS J170213.26+322954.1 outburst
>>Date: Wed, 5 Oct 2005 21:15:36 +0300
>>
>>I started my observations tonight at 17:40 UT and got the first eclipse at
>>17:44 UT.
>>The star is bright about CV=14.7.
>>
>>Quick period calculation from David's timings gives P=0.1000(86).
>>
>>I have a 'live' preliminary light curve at the observatory web site:
>>http://nyrola.jklsirius.fi/ccd/2005/data1005/SDSS1702_20051005C.png
>>
>>br,
>>
>>arto
>>--
>>Arto Oksanen                         arto.oksanen at jklsirius.fi
>>Jyvaskylan Sirius ry, Kyllikinkatu 1, FI-40100 Jyväskylä, Finland
>>Tel: +358-40-5659438                         Fax: +358-14-4157803
>>Nyrola Observatory  http://www.ursa.fi/sirius/nytt/nytt_info.html