Originally posted by heineken
the pcture i posted o fthat telescope is applying the Solar Filter you are referring to to watch Venus and Mercury..you see..there are 3 Holes..
1 FOR THE SUN
1 FOR MERCURY
1 FOR VENUS
I know absolutely nothing about astronomy, but it's obvious from the photo this is not the case.
If you notice in the picture, there are 3 telescopes. There is the large main one, and 2 smaller ones off to the side. They may be light sensors or
something else (remember, I know nothing).
The large hole is for the main telescope, the other holes for the other 2 things. The holes aren't for looking at different places in the sky.
Because the [glare shield] (for lack of the proper term) is fixed to the telescope, wherever you point it, you will look at. Unimpeded. A telescope
does not have peripheral vision or anything so it really stops nothing but glare, from my limited observation point.
Also, because the earth travels around the sun (year), there is nothing hidden on the other side we cannot see. The only exception to this would be if
the [brown dwarf] orbited the sun at exactly the same rate as earth.
Also, see here
edit on 28/3/11 by GobbledokTChipeater because: added link