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J/ApJ/518/262       CCD VIc Photometry of M30 Stars           (Sandquist+, 1999)
Wide-field CCD photometry of the globular cluster M30.
    Sandquist E.L., Bolte M., Langer G.E., Hesser J.E., De Oliveira C.M.
   <Astrophys. J., 518, 262-283 (1999)>
   =1999ApJ...518..262S
ADC_Keywords: Clusters, globular ; Photometry, CCD ; Photometry, VRI

Keywords: globular clusters: individual (M30) - stars: abundances -
          stars: evolution

Description:
    The file contains VIc data of the globular cluster M30. All frames were
    taken using a 2048x2048 pixel CCD with pixels covering 0.44 arcseconds
    on a side, for a total field of approximately 15 arcminutes on a side.
    Data were taken on 1994 July 78 at the Cerro Tololo Inter-American
    Observatory (CTIO) 4m telescope.
    The data were calibrated against Landolt (1983, Cat. II/118)
    standard stars.
Objects:
    -----------------------------------------
       RA   (2000)   DE      Designation(s)
    -----------------------------------------
    21 40 22.0   -23 10 45   M30 = NGC 7099
    -----------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        68    25279   VIc Photometry for M30 stars


See also:
    J/AJ/116/1757 : M30 UBV photometry (Guhathakurta+, 1998)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  5  I5    ---     ID        Identification
   7- 14  F8.3  pix     Xpos      X coordinate in pixels (1)
  16- 23  F8.3  pix     Ypos      Y coordinate in pixels (1)
  26- 32  F7.4  mag     Vmag      V magnitude
  35- 41  F7.4  mag     e_Vmag    V magnitude error
  44- 50  F7.4  mag     V-Ic      V-Ic colour
  53- 59  F7.4  mag     e_V-Ic    V-Ic colour error
  62- 68  F7.4  ---     chi2      Reduced chi2

Note (1): Pixel coordinates can be roughly transformed to delta RA and
     delta DEC positions (in arcseconds relative to the cluster center
     defined by Guhathakurta et al. (1998AJ....116.1757G)) using
     the following transformations:
     delta RA = -321.302 + 0.00106 * Xpos + 0.43704 * Ypos
     delta DE = -453.752 + 0.43520 * Xpos - 0.00151 * Ypos


Acknowledgements: Eric Sandquist 

(End)          Eric Sandquist [San Diego State University]           29-Jul-2004