Sun in centre of solar system - Copernicus & Galileo
2 of 5
optical telescopes
ADVANTAGES:- Small ones allow amateurs to view the night sky relatively cheaply. DISADVANTAGES :- they can only be used at night - they cannot be used if the weather is poor or cloudy.
3 of 5
other telescopes - Radio
ADVANTAGES - can be used in bad weather + not blocked out by clouds - used in day and night time DISADVANTAGES :- large & expensive
4 of 5
refract ??
changes the direction the light travels in
5 of 5
Other cards in this set
Card 2
Front
Heliocentric??
Back
Sun in centre of solar system - Copernicus & Galileo
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