Heat reflective covers - DIY or cheaper alternatives to TeleGixmos?

[Eastridge]

We are building a conservatory which will house our scope, at least in the winter when It will not get too hot in there.

Pondering whether we risk leaving it in their spring / autumn when daytime temps. could be higher & I know a heat reflecting cover would help.

Googling only seems to bring up these http://www.365astronomy.com/telegizmos-cover-for-10-12-tube-dobsonians-p-1865.html

look good but pricy for a 10" Dob.

I know how people on here have sought out bargins or like to DIY ( thanks to them I have a camping mat dew shield and cheap Maplins EP case) so, has anyone found a cheaper option or made one themselves from a specialist material?

Thanks,

[Kevdan]

Hi,

Ive not used one but have you thought about things like this - http://www.beautyexp...lanket-PS08.htm it's just a thermal blanket designed to keep heat in when hypothermia sets in but it will reflect heat, if 1 isnt enough selotape a couple together.

Kev.

edit - this is just one i found after googleing i cant say wether its good or bad

[brantuk]

I wouldn't bother with the expense of a heat reflective cover if it's indoors - just don't cool it down too rapidly on a hot day or you'll risk the optics cracking. Bit like not blowing hot air on a cold scope to demist it. The main thing is to make sure the sun doesn't shine down the tube which will fry the scope and/or burn a hole in the nearest wall. So keep the main cap on the open end of the scope

[Eastridge]

Thanks guys. I guess at the cost of Kevdans' suggestion might as well try that, even if it only serves as a glorified dust cover. Then can see how hot it does get during sunny days and progress accordingly.