Ground Truth for September ’05

Irregular (what else?) measurements of sky brightness using a Unihedron Sky Quality Meter at my observing site.

Date and local time-weather-sky brightness (mag./sq.arcsec)

September 24 4.15 am – clear bright moonlight – 17.07

September 21 11.25 pm – clear bright moonlight – 17.12

September 21 2.00 am – clear bright moonlight – 16.20

September 18 1.30 am – clear, bright moonlight (96% full) – 15.00

…Raindrops keep falling on my head…

September 10 2.00 am – clear – 17.90

September 4 2.40 am – clear – 17.96

September 3 4.10 am – clear – 18.06

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