Jure A >Question: what is the color of the night sky? To me it usually At a dark site the B-V colour is about 0.7, i.e. similar or slightly redder than the sun. Put another way the sky is about twice as faint in the blue (B) as it is in the green (V=visual) part of the spectrum. Malcolm To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at: http://www.tiac.net/users/lewkaren/meteorobs/subscribe.html