Re: next few nights

From: Joe Patterson <*jop_at_astro.columbia.edu*> Date: Wed, 17 Mar 2010 00:35:54 -0400 · jop_at_astro.columbia.edu

Hi Tom,

No, they're DQ Hers (intermediate polars).  RX0704 is special because 
the period is so short (240 s) - but the amplitude is so big that you 
can afford to go short.  The other periods are 10-15 minutes, so you can 
choose cycle times to suit you.

Wxception is AM CVn, since that's obviously an AM CVn.  Main period is 9 
minutes, so you gotta be a little fast - though not very.

Not giving a talk at SAS?

joe

Tom Krajci wrote:
> Hi Joe,
> 
> For these targets...many of which are AM CVn types, yes?...do you have a 
> certain maximum image cadence/cycle time?  (For example, my first run 
> this season on RX0704+26 had a cadence of about 50 seconds...I could 
> tell I needed to take shorter exposures to capture a fast-acting 
> component in the light curve.  The next night I used a cadence of about 
> 25 - 30 seconds...and the high freq. component was obvious.)
> 
> Thanks in advance,
> Tom Krajci
> ===================================================
> Joe Patterson wrote:
>> Yes,  CSS1044+21 has reflared, and is possibly a good target.  Sometimes 
>> the periodic humps in reflaring CVs are weak or nonexistent... but worth 
>> looking.
>>
>> We're done now with RX0704+26 - thanks, the campaign went great!  Before 
>> they disappear for the year, let's shift attention to BG CMi and MU Cam.
>> They've been starving for lack of CBA attention.
>>
>> And AM CVn beckons late in the night.  So does KX Aql, *very* late in 
>> the night.
>>
>> joe
>>   
> 
> 
> 