26 replies to this topic
Posted 10 April 2004 - 06:20 AM
Some time ago a chap down under made a report about thermal equilibrium in newtonians and reported that metal tubes got colder than the outside air - understandably creating poor viewing. It looks to me that carbon would have the same property, or worse.
Posted 10 April 2004 - 06:39 AM
That's interesting. But if it's just radiative cooling of the outside surface of the tube (which I strongly suspect), it should be an easy problem to solve. Just cover the telescope with thermal blanket ("space blanket") or something similar