[vsnet-chat 2690] Re:[Vsnet-chat 2679] [Prediscovery obs. of cv]

[Mati Morel <morel@ozemail.com.au>]

        It is certainly possible to find prediscovery observations of CVs in
the AC. I am not familiar enough with AC2000 to make a comment, but 25 years
ago I was using the Sydney Obs. zone of the Astrographic Catalogue (-51 to
-65deg S) to prepare a chart for
WX Hyi. I was amazed to find the variable recorded at approx. 11th mag.,
evidently
caught during a SUPERMAXIMUM. Normal maxima (3 or 4 times a month), while
being easy
catches for visual observers, would have been just below the limiting mag.
of the AC plates ( about 11.5p). Supermaxima, while brighter, are much  rarer.
        The Sydney AC plate is N1333, exposed 1925 Nov. 10. The printed AC
volume I
worked from contained only RECTANGULAR coordinates, and I had no easy way to
convert
any of them to RA and DEC.   I think WX Hyi was first reported as a variable
in 1949,
courtesy of Herr Hoffmeister.
        
Regards,
/Mati

  /=====================================\
  |  MOREL ASTROGRAPHICS                |
  |  Stellar Data & Information Centre  |
  |  c/o M. Morel                       |
  |  6 Blakewell Road,                  |
  |  Thornton  NSW 2322  AUSTRALIA      |
  |  Tel./fax: (02) 4966 2078                                   |
  |  151d38'33" E, 32d46'47"S           |
  |  e-mail: morel@ozemail.com.au       |
  \=====================================/

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp