Obviously they have some kind of lid when the telescope isn't being used, but when they are looking at something what keeps little space pebbles from scratching up the lenses, and dust from hazing them over?

Possibly related posts: (automatically generated)

 

logo How Do They Keep Small Meteorites From Striking The Lenses Of The Hubble Space Telescope During Use?
Meade 1000mm Telescope Mirror Lens Spotting Scope with Manon Stand Extra Lenses
Meade 1000mm Telescope Mirror Lens Spotting Scope with Manon Stand Extra Lenses
Paypal   US $125.02
GOODAntique Style Brass Theatre Opera Binocular Glasses Coated Lens Telescope
GOODAntique Style Brass Theatre Opera Binocular Glasses Coated Lens Telescope
Paypal   US $.10
CELESTRON C90 TELESCOPE 1000mm f11 LENS
CELESTRON C90 TELESCOPE 1000mm f11 LENS
Paypal   US $142.49