[Aavso-photometry] RS Oph Multicolor Photometry

Sat Feb 18 01:42:12 EST 2006

Hi Aaron

> Visual, CCDV, and PEPV observations are requested. CCD and
> PEP observers should use the 68 (V = 6.84, B-V = 0.99) star North
> of RS Oph on the 'a' and 'b' charts as a comparison star and the 63
> (V = 6.30, B-V = 0.31) star West-Southwest of RS Oph on the same
> charts as a check star. 

Do you have also "official" full UBVRcIc multi-color photometry for the
bright PMT and CCD comps too ?

Clear skies
  Wolfgang

-- 
Wolfgang Renz, Karlsruhe, Germany
Rz.BAV = WRe.vsnet = RWG.AAVSO

----- Original Message ----- 
From: "Aaron Price" <aaronp at aavso.org>
To: <aavso-photometry at aavso.org>
Sent: Friday, February 17, 2006 11:53 PM
Subject: [Aavso-photometry] RS Oph Multicolor Photometry

> I have posted Arne's UBVRcIc photometry of the RS Oph field to this URL:
> 
> ftp://ftp.aavso.org/public/calib/rsoph.dat
> 
>  I also wrote a perl script to convert it into a more human readable format.  
> For now use it at your own risk.  I'm interested in any comparison of its output
> with similar scripts anyone else has written. It is located here:
> 
> ftp://ftp.aavso.org/public/calib/rsoph.txt
> 
>  By the way, that's the new FTP site of Arne's .dat files. So update your 
> bookmarks and use it for future .dat downloads.
> 
> -- 
> Aaron Price (PAH), Technical Assistant, Technology
> American Association of Variable Star Observers
> http://www.aavso.org

----- Original Message ----- 
From: <aavso at aavso.org>
To: <aavso at aavso.org>
Sent: Monday, February 13, 2006 10:28 PM
Subject: AAVSO Alert Notice 335

>             THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
>                  25 Birch Street, Cambridge, MA 02138 USA
>                      www.aavso.org    aavso at aavso.org
>                  Tel. 617-354-0484       Fax 617-354-0665
> 
>                 AAVSO ALERT NOTICE 335  (February 13, 2006)
> 
> SUBJECTS: 1. RECURRENT NOVA 1744-06 RS OPHIUCHI IN OUTBURST
>           2. W VIR MONITORING WINDOW EXTENDED TO MID-APRIL
> 
> 1. RECURRENT NOVA 1744-06 RS OPHIUCHI IN OUTBURST
> 
> Object: 1744-06 RS OPH
> 
> Coordinates: R.A. 17h 50m 13.202s  Dec. -06o 42' 28.48" (2000.0)
> 
> The recurrent nova RS Oph is in outburst at visual magnitude 4.8,
> according to observations by Hiroaki Narumi, Ehime, Kita-gun, Japan, and
> Kiyotaka Kanai, Gunma, Isezaki-shi, Japan (IAU Circular 8671), and
> confirmed by Wolfgang Renz, Karlsruhe, Germany.
> 
> According to observations in the AAVSO International Database, the last
> outburst of RS Oph occurred in January 1985, when the star reached visual
> magnitude 5.2 and was brighter than 10.5 for about 80 days; RS Oph
> returned to its normal inter-outburst behavior approximately 570 days
> after outburst maximum. Previous outbursts have been recorded in 1898,
> 1933, 1958, and 1967, with a probable outburst in 1945. AAVSO observations
> confirm that no outburst occurred between the 1985 one and the current
> one.
> 
> While the length of the interoutburst interval in RS Oph varies greatly,
> the shape of the outburst and recovery to interoutburst is remarkably
> similar from outburst to outburst. For a very interesting analysis of the
> behavior of RS Oph, see B.D. Oppenheimer and J.A. Mattei, JAAVSO, 22, 2,
> 105 (1993), or Oppenheimer and Mattei in Compact Stars in Binaries,
> proceedings of IAU Symposium 165, ed. J. van Paradijs, Edward Peter
> Jacobus van den Heuvel, and Erik Kuulkers, Kluwer Acad. Publ., Dordrecht,
> 457 (1994).
> 
> Visual, CCDV, and PEPV observations are requested. CCD and PEP observers
> should use the 68 (V = 6.84, B-V = 0.99) star North of RS Oph on the 'a'
> and 'b' charts as a comparison star and the 63 (V = 6.30, B-V = 0.31) star
> West-Southwest of RS Oph on the same charts as a check star. For stars
> this bright, CCD observers may need to use some technique to reduce the
> brightness of the star. Please see the AAVSO CCD Manual, section 4.7
> (http://www.aavso.org/observing/programs/ccd/manual/4.shtml#7).  
> Time-series observations would be very interesting, as this outburst is
> the first one of RS Oph for which they are feasible for amateur
> astronomers to make.
> 
> Charts: AAVSO a, b, c, and d scale charts for RS Oph are available at:
> 
> http://www.aavso.org/cgi-bin/searchcharts3.pl?name=RS%20OPH
> 
> Ulisse Munari and Arne Henden are in the process of publishing all-sky
> UBVRI calibration for this field, and that .dat file will be posted
> (probably on February 14) to help CCD/PEP observers, especially as RS Oph
> fades.
> 
> Report Object to the AAVSO as: 1744-06 RS OPH
> 
> Observations Reported to the AAVSO: FEB 08.2493 UT, 10.9, A. Gonzalez
> Herrera, Ferol, Spain; 10.2100, 11.0, B. Granslo, Fjellhamar, Norway;
> 12.829, 4.5, H. Narumi, Ehime, Kita-gun, Japan (via K. Hirosawa, Aichi,
> Inazawa-shi, Japan; IAU Circular 8671); 12.8426, 4.5 CCD, Y. Nakamura,
> Kameyama, Mie-ken, Japan (via S. Nakano, Sumoto, Japan; IAU Circular
> 8671); 12.847, 4.6, K. Kanai, Gunma, Isezaki-shi, Japan (via Hirosawa; IAU
> Circular 8671); 12.862, 4.4, Kanai (via Hirosawa; IAU Circular 8671);
> 13.27, 4.9, A. Pereira, Cabo da Roca, Portugal (IAU Circular 8671);
> 13.1631, 4.8, W. Renz, Karlsruhe, Germany; 13.1806, 4.8, Renz; 13.2139,
> 4.8, Renz; 13.2347, 4.8, Renz; 13.3965, 5.1, J. Bortle, Stormville, NY;
> 13.341, 5.4 V (saturated), ASAS via G. Pojmanski (IAU Circular 8671);
> 13.344, 5.3 V, ASAS via G. Pojmanski (IAU Circular 8671); 13.4826, 5.71
> PEPB, D. West, Mulvane, KS; 13.4826, 4.88 PEPV, West; 13.4715, 2.36 PEPH,
> West; 13.4715, 2.71 PEPJ, West; 13.490, 5.65 CCDB, G. Sostero, Cavalicco,
> Italy; 13.491, 5.04 CCDV, Sostero; 13.493, 4.43 CCDR, Sostero.
> 
> Congratulations to Hiroaki Narumi and Kiyotaka Kanai on their discovery!
> 
> 
> 2. W VIR MONITORING WINDOW EXTENDED TO MID-APRIL
> 
> ...
> 
> Thank you very much for your astronomical contributions and efforts.
> 
> Good observing!
> 
> Elizabeth O. Waagen
> Senior Technical Assistant
> 
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