Newtonian Telescopes
A ray diagram of a Newtonian Telescope
A flat mirror is then used move the focus outside the telescope where it is easier to see, or to put an instrument to measure the light.
•
•
•
•
National Schools'
Observatory
•
•
•
•
at the centre of our
solar system.
Factfile: The Sun
The sun is a typical starat the centre of our
solar system.
It is over 1 million km
across, and so large that
you could fit a million
earths inside it!
Its surface blazes at a
temperature of 5500°C.
•
•
•
•
The Sun
The Sun
•
•
•
•
National
Schools'
Observatory
National
Schools'
Observatory