1. INTRODUCTION

2. DATA
2.1. Sample selection and observations
2.2. Background variations and PSF effects

3. RESULTS

4. DISCUSSION
4.1. A large variation in stellar halo mass fractions
4.2. Inclination effects
4.3. Outer disk morphology
4.4. Thick Disks?
4.5. Stellar halo fractions in context

5. CONCLUSIONS