(cba:news) (cba:chat) CP Eri in superoutburst

Joe Patterson jop at astro.columbia.edu
Sat Oct 5 05:18:21 EDT 2013


Hi Bill et al.,

We haven't observed CP Eri in a long time.  But in the past, we used a 
15th mag comparison star 60" E and 64" N from CP Eri.  Color a tad red, 
but not unacceptably so.  Others are ok too, as usual, if they're 
appropriately bright.  Remember it'll fade a few magnitudes, so the very 
bright comps won't be suitable.

joe

We've only caught the superhumps in their full glory on one night.  And 
they're critical - superhumps in AM CVn stars are mighty rare!


On 10/5/2013 4:57 AM, Bill Stein wrote:
>
> Enrique - I am observing CP Eri now,  However, I do not see an AAVSO
> sequence.  Any recommendations?
>
> Bill
>
> William L. Stein
> Las Cruces, NM
>
> -----Original Message-----
> From: cba-chat-bounces at cbastro.org [mailto:cba-chat-bounces at cbastro.org] On
> Behalf Of Enrique de Miguel
> Sent: Friday, October 04, 2013 7:44 PM
> To: cba-chat at cbastro.org
> Subject: (cba:chat) CP Eri in superoutburst
>
> CP Eri is currently at mean 16.5 mag and showing clear superhumps of
> ~0.10-0.12 mag full amplitude.
>
> Enrique
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