A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Peter Fogg
Date: 2006 Jan 25, 17:36 +1100
From C&P’s site:
“Polarizing Shade Glasses
One each set of polarizing shades are for the star and horizon view. This allows simple brightness control of star and horizon image. Dazzling will be avoided. Sudden changes of brightness caused by movement of clouds will simply and quickly be corrected. ”
It sounds as though a set of polarizing filters comes as standard with the Horizon Ultra. There would have to be two for the brightness control promised, by selectively turning either or both.