(cba:news) Stars for February

Joe Patterson jop at astro.columbia.edu
Fri Feb 8 17:25:50 EST 2013

Hi Joe et al.,

I've been in South Africa at a nova conference, and it's a little hard 
to keep track of which stars are quite ripe right now.  In the north, 
that is.  In the south, it's a slam dunk: CP Pup and T Pyx (time to 
renew coverage of the latter now).

But two stars which are now desirable to observe at some length are BY 
Cam and "Paloma" (0524+42).  Both are candidate or likely "asynchronous 
polars", and we'd like at least 1-2 more weeks to conclude coverage. 
ER UMa is also a good candidate, as Enrique said.

V1159 Ori is over.  I'm not sure I said that before... but February is 
too late for Orion.  It was an awfully good year!

Although we're mostly giving BK Lyn a rest this year (after last year's 
frency), we do want to peek in on it every so often to see when the 
supermaxima occur, and if possible measure one of the superhump periods. 
  I notice that AAVSO data doesn't define either.  So it appears that if 
we don't do this, no one will.  It would be awfully nice if *someone* 
will decide to be the BK Lyn specialist.  Pretty nice star to specialize 
in... and it would be unfortunate to lose track of cycle counts (for the 
supers) after investing all that energy in 2011-12!

The various DQs (intermediate polars)continue to be good targets for 
shorter observations.


On 2/8/2013 1:57 PM, Enrique de Miguel wrote:
> Joe,
>   BY Cam is definitely a good target for the first half of the night.
> I would suggest you ER UMa for the second half. The superoutburst ended few days ago and it has just gone through the first normal outburst of the new supercycle.
> We don't need a dense campaign on ER UMa, but just few runs to show (as I suspect) that is still showing negative superhumps. They should be definitely more
> clearly visible now that is in its low state around 15.0-15.5 mag.
>   Enrique
> On Feb 8, 2013, at 7:30 PM, Joe Ulowetz wrote:
>> Mark,
>> I'm thinking of joining you on BY Cam. With our locations we wouldn't
>> overlap much and, when you're running again, be able to cover it for longer
>> time series.  Unless someone suggests a higher priority target in the next
>> few hours, I'll plan to do that tonight.
>> Thanks,
>> -Joe U.
>> On Fri, Feb 8, 2013 at 10:44 AM, Mark Salisbury <
>> mark.a.salisbury at btinternet.com> wrote:
>>> Hi
>>> I've been following BY Cam in the few clear nights we've had but the
>>> weather
>>> has been atrocious in the UK so it's not been easy.  Unfortunately a
>>> technical problem will keep me out of action for a couple of weeks now.
>>> It's an interesting target to follow so I'll carry on with it soon as I'm
>>> up
>>> and running again.
>>> Rgs
>>> Mark

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