[net.astro] StarDate: June 11 Where the Stars D

paul@uiucuxc.Uiuc.ARPA (07/02/85)

Viewing a planet through a telescope reveals the atmospheric turbulence
that makes stars twinkle.  Most of the time the image ripples and jumps.
Every so often the image steadies and for a few seconds a clear view can
be seen.  Planetary viewing takes patience and/or stable air masses.  In
the midwest hazy summer days are preferred to crisp winter nights.  Not
only is the air steadier in summer, but frostbite is a neglible risk.

         Paul Pomes

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