Celestron 9.25" Aluminum Dew Shield with Cap (94022) Power Adapter Since we introduced our Plössls

Since we introduced our Plössls in 1980

There are several aspects that have to come together when observing at high powers: good-to-perfect atmospheric seeing conditions

the planeoptically

Starting with the inner-ring backed off from fully tight

Celestron 9.25" Aluminum Dew Shield with Cap (94022) Power Adapter Since we introduced our PlösslsUse the Aluminum Dew Shield on your 9. 25 Schmidt Cassegrain and EdgeHD telescope tube confidently, knowing it was created for your exact instrument. The Celestron Aluminum Dew Shield with Cover Cap is an essential accessory that protects your telescope tube in the field. The dew shield reduces radiative cooling of the Schmidt corrector lens to the night sky, thus keeping the lens below the dew point longer preventing dew formation on the lens.