Astrozap Celestron 127mm (5") SLT Mak Heated Dew Shield Telescope Type_Reflector you could also use it

you could also use it as a spotting scope for great terrestrial (daytime) viewing

Why Buy The Explore Scientific Carbon Fiber ED152 APO Triplet

Accepts GM1D1 1

5 Air Spaced Triplet with Hoya FCD100 optics and Integrated Dew Shield

And Because Argon atoms are "larger" than Nitrogen

Astrozap Celestron 127mm (5") SLT Mak Heated Dew Shield Telescope Type_Reflector you could also use itThe Astrozap Flexible Dew Shield is an essential telescope accessory for any stargazer using a telescope where frost or dew regularly form. The Astrozap FlexiHeat Dew Shield uniquely combines both active and passive methods of dew fighting with the added feature of shielding the telescope from undesirable stray light. While passively fighting dew by its physical design, each Astrozap Flexible Dew Shield also has a built in Astrozap Dew Heater Strap to