[vsnet-alert 22209] Re: SDSSJ141118.31+481257.6: superhump period

[Geoff Stone]

Here are my observations from last night.


On 6/4/2018 6:53 AM, Tonny Vanmunster tonny.vanmunster at gmail.com via 
vsnet-alert wrote:
> Hi Roberto,
>
> That's a very weird finding. I observed SDSS J141118.31+481257.6 for
> several hours at high cadence (30s exposures) last night using a 0.40-m
> f/5.1 telescope at CBA Extremadura Observatory and the object was showing
> prominent superhumps with an amplitude of close to 0.3 mag. My session
> overlaps with your run, so it will be interesting to see how you get to a
> "no variation >0.05 mag" statement. I will publish my lightcurve later
> tonight.
>
> Best regards
> Tonny
>
> Tonny Vanmunster
> CBA Belgium Observatory
> CBA Extremadura Observatory
> www.cbabelgium.com
> www.peranso.com
>
>
> On Mon, Jun 4, 2018 at 12:20 PM, roberto nesci <Roberto.Nesci at iaps.inaf.it>
> wrote:
>
>> I observed the star on June 3 2018 with the 30cm telescope of Foligno
>> (K56) equipped with a Canon 550D, from 21:08:51 to 21:56:07 (48 minutes),
>> corresponding to about one period. Comparison stars were the AAVSO #111 and
>> #127 and aperture photometry was made with the photometry tool of MaximDl.
>> The star was substantially brighter than the on June 1/2, average values
>> being B=13.13; V=13.26.
>> No variations larger than 0.05 mag with respect to the average level were
>> detected in any of the three BVR bands.
>>
>> Roberto Nesci
>> --
>> prof. Roberto Nesci,  associated to Istituto Nazionale di Astrofisica,
>> (National Institute of Astrophysics) INAF-IAPS, via Fosso del Cavaliere
>> 100, 00133 Roma, Italia
>>
>>
>