Comparisons between the X-shooter observations and the current sky background model for different lunar phases (100, 97, 56%). Three observations are shown, Run A (black), Run B (dark gray) and Run C (gray), all at ρ = 45°. Over-plotted are different models for each run in blue, green and orange for Runs A, B, and C, respectively. The set of models are the sky background model with F = 1 (solid) and with F = 1.2 (dot-dashed).