Primary/Secondary Mirror Coatings:
-Coating Plant: Utilizes magnetron technology that can coat with either Aluminum or
protected Silver. Silver will substantially benefit infrared and optical observations.
-Aluminum Coating: Approximately 1200 Ångströms (120nm) thick and requires about
16 grams of Aluminum to coat the entire primary mirror. This is equivalent to
a little more than 1 aluminum soda can.
-Protected Silver Coating: Provides significantly lower Infrared emissivity than is
possible with traditional Aluminum coatings - 4% IR emissivity for the entire optical
system (ultimate goal is 2%). Reflectivity with protected silver is substantially greater
than with aluminum at all wavelengths longer than 400nm, and is greater by almost 20%
at some red wavelengths.