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How do refracting and reflecting telescopes differ?

Answer 1

Levi Alexander

Refractors use lens as primary objective where as reflectors parabolic mirrors are used as objectives.

Since refractors have many problems Sir Isaac Newtonn deviced the reflectors,.![![enter image source here]]

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Answer 2

Alexander Acosta

Refracting telescopes use lenses to gather and focus light, while reflecting telescopes use mirrors. Refracting telescopes suffer from chromatic aberration, where different colors focus at different points, while reflecting telescopes do not. Reflecting telescopes can be made much larger than refracting telescopes due to the ease of supporting large mirrors.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.