Question
Which type of telescopes can be made using a concave mirror, convex mirror, plane mirror, and a lens? Draw diagrams of these telescopes.
✓
Answer
A Newtonian telescope can be made using a concave mirror, plane mirror and a lens.
A Cassegrain telescope can be made using a convex mirror, concave mirror and a lens.
A refracting telescope can be made using two or more lenses.
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