ADC/CDS Standard Document for Catalog:
/journal_tables/AJ/116/2415/

1. Use the ADC Data Viewer Suite to visualize the data.
2. Get the data files via anonymous FTP. (See Note.)

J/AJ/116/2415       CCD UBVRI Photometry of M80                 (Alcaino+ 1998)
================================================================================
Multicolor CCD photometry of the poorly studied globular cluster M80.
       Alcaino G., Liller W., Alvarado F., Kravtsov V., Ipatov A.,
       Samus N.N., Smirnov O.
      <Astron. J. 116, 2415 (1998)>
      =1998AJ....116.2415A
================================================================================
ADC_Keywords: Photometry, UBVRI ; Photometry, CCD ; Clusters, globular

Description:
    The table  photom.dat  contains  the  first  multicolour  (UVBRI)  CCD
    photometry of 4899 stars in  a  4'x7'  field  of  the  poorly  studied
    globular cluster M80. The observations  were  acquired  on  1994  June
    13-16 using the 2.5m telescope of the Las Campanas Observatory, with a
    2x1024x1024 pixel  CCD. Two observing 4'x4'  fields were observed, the
    first one at the cluster  center,  and  the  second  one  centered  at
    approximately 3' to the East  of  the  cluster  center.  The  limiting
    magnitude  was  deeper  in  the  the  second  frame  by  approximately
    DV=2.5mag. The  exposures were 8 to 500s, with  a total of 7 frames in
    U, 17 frames in B, 20 frames in V, and 18 frames in I.

Objects:
    ---------------------------------------------------
       RA   (2000)   DE    Designation(s)
    ---------------------------------------------------
    16 17 02.4  -22 58 30  M 80 = NGC 6093 = C 1614-228
    ---------------------------------------------------

File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
photom.dat      50       4899    UBVRI in M80
--------------------------------------------------------------------------------

Byte-by-byte Description of file: photom.dat
--------------------------------------------------------------------------------
   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   2-  5  I4    ---     Seq       [1-6443] Running number
   7- 14  F8.3  pix     xpos      Coordinate (along DEC, increases to the south)
  16- 23  F8.3  pix     ypos      Coordinate (along RA, increases to the east)
  25- 30  F6.3  mag     Vmag      V magnitude
  32- 37  F6.3  mag     U-B       ? U-B color
  39- 43  F5.3  mag     B-V       ? B-V color
  45- 50  F6.3  mag     V-I       V-I color
--------------------------------------------------------------------------------


Acknowledgements:
    It is a pleasure to thank Nikolai N. Samus <samus@sai.msu.su>
    who kindly supplied the data files to CDS.
================================================================================
(End)                                     Francois Ochsenbein [CDS]  20-Jan-1999