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J/A+AS/121/451      VI photometry of Berkeley 66 (Guarnieri+ 1997)
VI photometry of the galactic cluster Berkeley 66
     Guarnieri M.D., Carraro G.
    <Astron. Astrophys. Suppl. Ser. 121, 451 (1997)>
    =1997A&AS..121..451G      (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Photometry

Keywords: open clusters: Berkeley 66 - HR diagram


Abstract:
    A colour magnitude diagram (CMD) extending to V≃19mag is given for
    444 stars in the region of the galactic cluster Berkeley 66. The V and
    I photometry of a nearby field is also reported. This object appears
    very faint, highly contaminated by foreground stars and very reddened.
    The apparent distance modulus (m-M) and the colour excess EV-I are
    guessed to be 17.5 and 1.1, respectively, with an uncertainty of at
    least 30%. Adopting these values the comparison of the CMD with
    theoretical isochrones from the Padova group provides an age around
    1.0Gyr.
Objects:
    ------------------------------------------------
       RA   (2000)   DE    Designation(s)
    ------------------------------------------------
     03 04.3      +58 46   Berkeley 66 = C 0300+585
    ------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2            42      444   VI photometry


Byte-by-byte Description of file: table2

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     ID        Identification number
   5- 10  F6.3  mag     Vmag      V magnitude
  12- 17  F6.3  mag     Imag      I magnitude
  19- 24  F6.3  mag     V-I       V-I color index
  26- 33  F8.3  pix     Xpos      X coordinate (1 pix = 0.47")
  35- 42  F8.3  pix     Ypos      Y coordinate (1 pix = 0.47")


Table1: Journal of observations, 1.05m telescope, Pino Torinese, Torino (Italy)
-------------------------------------------------------------------------------
                       Field   Filter  Exposure  Seeing
                       number            (sec)   (FWHM)
-------------------------------------------------------------------------------
  November 30, 1994
                       #1        I         60    1.41
                       #2        I        300    1.80
                       #3        I        180    1.35
                       #4        V        180    1.54
                       #5        V        120    1.54
                       #6        V        300    1.67
  March 7, 1995
                                 V        300    2.24
                                 I        120    2.19

Acknowledgements: Giovanni Carraro 

(End)                                         Patricia Bauer [CDS]   18-Jun-1996