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Originally Posted by mickoking
G,day
I believe the best colour for a telescope is white (with bits of black) it is something thats been stuck in my head since I was a kid. A gleaming white tube just seems more purposefull, more profesional than other colours. What does every one else think? 
For the record I don't own a white scope which is really sad.  |
Yes, white is the most aesthetic colour - but white paint has the worst thermal properties thanks to it's primary ingredient of Titanium Oxide (TiO or maybe TiO2 - can't remember??). This white pigment radiates heat strongly, causing the tube to cool faster than it should. With a white scope you'll find that it dews up very early and you'll have prolonged problems with tube currents.
Search around on the net, there's information available on this.
It turns out that the best behaved material for tubes is unpainted aluminium. Looks pretty too :-)
Bird