PPT Slide

Figure 1: Sky background as a function of Azimuth

[relative to Zenith brighness]

Blue, green and red lines represent J, H and Ks bands.

Measurements have been taken at ALT=20 (solid lines) and ALT=45 (dashed lines).

VL=Vallenar,

LS=La Serena.

Alt = 20o

Azimuth

Alt = 45o

Surf.brightness (relative to Zenith)

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