If I take my 6" Newtonian telescope out of storage around 4:p.m., will it cool down enough by around 9 p.m?

Question

I know it takes quite a while for bigger mirrors but what about 6"mirror?

Answer 1

It would depend if is summertime or wintertime. Also, if you put the telescope on hot afternoon pavement, the telescope could still be too warm by 12 midnite! Sometimes, the burbling air over the telescope will not give good images all night long! Most of the time tho, if you put a moderately warm telescope out on a fairly cool lawn, you'll be able to observe by 9pm...most times even sooner. Some telescopes have open tubes & cool down quicker than closed tube telescopes. That you know of the excessive heat a mirror has to get rid of helps you already to prepare your telescope for a night's observing session.

Answer 2

My 6" Newtonian cools down in one hour. The trouble is that at 4:p.m., the outside temperature may not be cooler than your storage temperature. If you store the telescope in an air conditioned house in summer, it could well be cooler in storage that it would be after an hour outside.

Answer 3

On scope of your size, depending on the temperature difference between your home and outside (not sure what region you live), it could take 45-60 minutes. During this cool down period you may not be able to bring the telescope to focus at all and images will look very bad.

Answer 4

It should even if the storage space is warm, and it cools down quickly after sunset. Watch out for condensation.

Answer 5

sorry,but i did not got ur point.why ur storage is so warm?
Anyone who answers next,plz explain this too,wats the matter,
HAve too much interests in astronomy and telescopes but not aware of the technical aspects,such kind which the question is about.

Answer 6

Yes.

An hour of cool-down is plenty for most purposes.