HST color-magnitude diagrams of 74 galactic globular clusters in the HST F439W and F555W bands ⋆

@article{Piotto2002HSTCD,
  title={HST color-magnitude diagrams of 74 galactic globular clusters in the HST F439W and F555W bands ⋆},
  author={Giampaolo Piotto and Ivan R. King and S. George Djorgovski and Craig Anthony Sosin and Manuela Zoccali and Ivo Saviane and Francesca de Angeli and M. Riello and Alejandra Recio-Blanco and Robert Michael Rich and Georges Meylan and Alvio Renzini},
  journal={Astronomy and Astrophysics},
  year={2002},
  volume={391},
  pages={945-965}
}
We present the complete photometric database and the color-magnitude diagrams for 74 Galactic globular clusters observed with the HST/WFPC2 camera in the F439W and F555W bands. A detailed discussion of the various reduction steps is also presented, and of the procedures to transform instrumental magnitudes into both the HST F439W and F555W flight system and the standard Johnson B and V systems. We also describe the artificial star experiments which have been performed to derive the star count… 

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