1. Introduction

2. Observations and data reduction
2.1. Data reduction
2.2. Making maps
2.3. Spitzer MIPS data reduction

3. Results
3.1. Source extraction
3.2. Survey completeness and depth
3.3. Flux deboosting
3.4. Spurious detections

4. Cluster lens models and number counts
4.1. Number counts analysis

5. Stacking analysis
5.1. On the validity of the stacking detections
5.2. The S₂₄μm-S₈₇₀μm relation
5.3. A MIPS source contributing to the stacked signal

6. Contribution to the extragalactic background light

7. Conclusions