Quote:
Originally Posted by Allan_L
Hi Robert.
Can you elaborate a little more on what you mean by this, please?
On a DOB for example, do you mean don't store the telescope with the primary mirror "Facing" upwards (ie mirror at bottom, as when in normal use)
or do you mean upside down (ie with the primary mirror actually at the top).
Thanks
|
Hi Allan,
I have never tried storing a newtonian telescope's Tube Assembly with the aluminized (or otherwise coated) surface of the Primary Mirror pointing downwards.
Maybe someone elso can comment on this.
However, I
have tried storing a newtonian Tube Assembly with the aluminized/coated surface of the Primary Mirror pointing upwards, and this was
disastrous; apart from the dirt buildup, the overcoating of the primary mirror lasted a shorter period of time than it should have.
Therefore, I usually store my telescope tubes in a horizontal orientation.
There do exist some more sophisticated, and probably superior, solutions which involve actually covering the primary mirror.
cheers,
Robert