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[vsnet-campaign-ecl 90] Re: (fwd) Y Cyg Brighter?



Dear colleagues,

Y Cyg observations by Mr.Nakajima (Sep. 26)

object         YYMMDD(UT)        mag    code
CYGY           20030926.39821     7.40V  Njh
CYGY           20030926.39959     7.45V  Njh
CYGY           20030926.40098     7.43V  Njh
CYGY           20030926.40237     7.45V  Njh
CYGY           20030926.40376     7.43V  Njh
CYGY           20030926.40515     7.41V  Njh
CYGY           20030926.40654     7.43V  Njh
CYGY           20030926.40793     7.45V  Njh
CYGY           20030926.40932     7.43V  Njh
CYGY           20030926.41071     7.44V  Njh
CYGY           20030926.41209     7.42V  Njh
CYGY           20030926.41348     7.41V  Njh
CYGY           20030926.41487     7.43V  Njh
CYGY           20030926.41626     7.44V  Njh
CYGY           20030926.41765     7.43V  Njh
CYGY           20030926.41904     7.42V  Njh
CYGY           20030926.42043     7.42V  Njh
CYGY           20030926.42182     7.44V  Njh
CYGY           20030926.42321     7.43V  Njh
CYGY           20030926.42459     7.43V  Njh
CYGY           20030926.42598     7.44V  Njh
CYGY           20030926.42737     7.43V  Njh
CYGY           20030926.42876     7.44V  Njh
CYGY           20030926.43015     7.44V  Njh
CYGY           20030926.43154     7.44V  Njh
CYGY           20030926.43293     7.43V  Njh
CYGY           20030926.43432     7.44V  Njh
CYGY           20030926.43571     7.42V  Njh
CYGY           20030926.43709     7.43V  Njh
CYGY           20030926.43848     7.44V  Njh
CYGY           20030926.43987     7.42V  Njh
CYGY           20030926.44126     7.45V  Njh
CYGY           20030926.44265     7.42V  Njh
CYGY           20030926.44404     7.47V  Njh
CYGY           20030926.44543     7.44V  Njh
CYGY           20030926.44682     7.44V  Njh
CYGY           20030926.44821     7.43V  Njh
CYGY           20030926.44959     7.43V  Njh
CYGY           20030926.45098     7.42V  Njh
CYGY           20030926.45237     7.44V  Njh
CYGY           20030926.60133     7.64V  Njh
CYGY           20030926.60272     7.66V  Njh
CYGY           20030926.60411     7.67V  Njh
CYGY           20030926.60550     7.68V  Njh
CYGY           20030926.60689     7.65V  Njh
CYGY           20030926.60828     7.67V  Njh
CYGY           20030926.60966     7.65V  Njh
CYGY           20030926.61105     7.66V  Njh
CYGY           20030926.61244     7.65V  Njh
CYGY           20030926.61383     7.66V  Njh
CYGY           20030926.61522     7.64V  Njh
CYGY           20030926.61661     7.66V  Njh
CYGY           20030926.61800     7.72V  Njh
CYGY           20030926.61939     7.69V  Njh
CYGY           20030926.62078     7.70V  Njh
CYGY           20030926.62216     7.70V  Njh
CYGY           20030926.62355     7.68V  Njh
CYGY           20030926.62494     7.70V  Njh
CYGY           20030926.62633     7.73V  Njh
CYGY           20030926.62772     7.76V  Njh
CYGY           20030926.62911     7.73V  Njh
CYGY           20030926.63050     7.71V  Njh
CYGY           20030926.63189     7.74V  Njh
CYGY           20030926.63328     7.73V  Njh
CYGY           20030926.63466     7.74V  Njh
CYGY           20030926.63605     7.70V  Njh
CYGY           20030926.63744     7.73V  Njh
CYGY           20030926.63883     7.72V  Njh
CYGY           20030926.64022     7.73V  Njh
CYGY           20030926.64161     7.75V  Njh
CYGY           20030926.64300     7.72V  Njh
CYGY           20030926.64439     7.75V  Njh
CYGY           20030926.64578     7.73V  Njh
CYGY           20030926.64716     7.74V  Njh
CYGY           20030926.64855     7.76V  Njh
CYGY           20030926.64994     7.75V  Njh
CYGY           20030926.65133     7.78V  Njh
CYGY           20030926.65272     7.79V  Njh
CYGY           20030926.65411     7.81V  Njh
CYGY           20030926.65550     7.78V  Njh
CYGY           20030926.65689     7.79V  Njh
CYGY           20030926.65828     7.82V  Njh
CYGY           20030926.66105     7.85V  Njh
CYGY           20030926.66244     7.85V  Njh
CYGY           20030926.66522     7.84V  Njh
CYGY           20030926.66661     7.87V  Njh
CYGY           20030926.67078     7.86V  Njh
CYGY           20030926.67216     7.87V  Njh
CYGY           20030926.67633     7.86V  Njh
CYGY           20030926.67772     7.88V  Njh

observer   : Kazuhiro Nakajima (Kumano, Mie, Japan)
instruments: 25SC + CV-04(CCD) + V filter

the check star is SAO70626.

SAO70626 = BD+34.4196 = HD199007 = HIP103073 = TYC2696.1914.1


             - 26/Sep/2003 Y Cyg (By Mr. Nakajima) -
07 +                                                         
   |                                                         
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   |    **********                                           
   +            *                                            
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   |                                      ***** *            
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08 +                                                         
    +------+------+------+------+------+------+------+------+
   18     19     20     21     22     23     24     25     26 (UT+0900)


At 09:10 2003/09/22 +0200, you wrote:
> Dear colleagues,
> 
> I have measured Y Cyg with CCD ST8 (filter R) attached to RF80 on Jul 7,
> 2003 (52828,38-0,58). The ascending branch is measured (421 points). Light
> changes are approx. between 1.8-1.2 mag (V-C) to the check star SAO 70575.
> 
> With best regards Miloslav Zejda
> 
> ********************************************************
> Miloslav Zejda
> Nicholas Copernicus Observatory and Planetarium in Brno
> Kravi hora 2, 616 00 Brno, Czech Republic
> -------------------------------------------------------------------------
> phone:420+5 4132 1287
> fax: 420+5 412 333 89
> privat phone: 420+5 46 22 10 72
> mobil phone: 420+721 377 398
> zejda@hvezdarna.cz
> 
> 
> 
> ----- Original Message ----- 
> From: "Taichi Kato" <tkato@kusastro.kyoto-u.ac.jp>
> To: <vsnet-campaign-ecl@ooruri.kusastro.kyoto-u.ac.jp>;
> <vsnet-ecl@ooruri.kusastro.kyoto-u.ac.jp>
> Sent: Sunday, September 21, 2003 2:38 AM
> Subject: [vsnet-ecl 1069] (fwd) Y Cyg Brighter?
> 
> 
> > From: DWest61506@aol.com
> > Date: Sat, 20 Sep 2003 10:03:25 EDT
> > Subject: [vsnet-chat 6869] Y Cyg Brighter?
> >
> > >From a quick review of past observations in the AAVSO database and some
> > literature sources, Y Cyg usually varies between V=7.3 and 7.9.  Y Cyg is
> an Algol
> > type eclipsing binary.  On Sep 17.104 visually I observed Y Cyg at 6.6
> using
> > AAVSO chart 2039+35aa.  On Sep 18.08 I measured Y Cyg at V=6.8 +/- 0.15
> > photographically using the same AAVSO chart.  As a check star I measured
> SAO 70575
> > which is very close to Y Cyg at V=6.6.  SIMBAD gives V=6.65 for SAO 70575.
> > Based on this check star and others I see no reason to doubt my
> photographic
> > photometry.  I digitize the images and use MIRA to perform differential
> photometry.
> >  Someone please confirm if Y Cyg is brighter than normal.
> >
> > Thanks,
> > Doug West
> > http://hometown.aol.com/dwest61506/index.html
> 


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