What is the operating temperature range for Celestron telescopes?
September 9, 2009
We have not stated an operating temperature range.
We know from experience that our mounts are successful when used with reasonable care throughout North America on a 4-season basis both during the daytime and at night. We know astronomers all around the world use our products every day and night. However, they are not meant to be used in "extreme" conditions and are not specially built to endure severe environmental conditions.
Take the same precautions while operating equipment in low or high temperatures as you would any other consumer market electromechanical device such as automotive accessories, cameras, consumer electronics or power tools.
The same is true for storage. The longest life of electronics and optical coatings will be achieved in conditions where there isn’t cycling over a great range of high and low temperatures. Cycling causes slight expansions and contractions of components and allows moisture to condense and evaporate (dewing). Both effects can eventually deteriorate parts of your telescope. Cycling can break down lubricants as well.
Though they can be left outside when properly protected from direct sunlight and weather, or in a unheated, uncooled shelter, we recommend our portable mounts and telescopes be brought inside between observing sessions for the longest possible operating life.