StarDome is a Java applet simulating the night sky, initially displaying the view from Waukesha, Wisconsin, but customizable to any location using latitude, longitude, time zone, and daylight saving ...

AT 20 minutes to 6 P.M. on Saturday 10th inst., I witnessed a natural phenomenon which I understand is very unusual. It was a portion of a halo around the zenith. Take the zenith as centre, and with a ...

The radial axis represents the elevation angle, the azimuth angle is represented by the angular axis, and the color represents the values of non-isotropic (∆), which is the difference between the SPD ...