1. Introduction
2. Observations and Data Reduction
3. Determining Fundamental Parameters
4. Results and Discussions
4.1. Asterisms or Real Clusters?
4.2. Dolidze 33
4.3. ESO 447-29
4.4. ESO 392-13
4.5. Ruprecht 100
4.6. Trumpler 25
4.7. Comparison with the Literature
5. Conclusions