1. INTRODUCTION

2. THE SAMPLE

3. ACS OBSERVING STRATEGY

4. WFPC2 OBSERVING STRATEGY

5. ARCHIVAL DATA

6. ACS PHOTOMETRY

7. WFPC2 PHOTOMETRY

8. PHOTOMETRIC TESTS

9. ASTROMETRY

10. DATA PRODUCTS

11. COLOR-MAGNITUDE DIAGRAMS

12. MAGNITUDE OF THE TIP OF THE RED GIANT BRANCH

13. CONCLUSIONS