AQA Astronomy - Optical Telescopes - Flashcards in A Level and IB Physics

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Created by: Alex Capper
Created on: 07-06-12 22:38

Refracting telescopes are made using:

Converging/convex lenses

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Images seen through a telescope can be:

Only real

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The focal point can be found by:

1/ (1/u +1/v)

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How far from the objective lens is the principle focus?

The focal length of the objective lense

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A reflecting telescope uses:

A parabolic concave mirror and a convex mirror

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The resolving power of a telescope is:

The smallest angle at which you can distinguish between two points

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If a mirror in a reflecting telescope isn't quite ______, it will have spherical aberration.

Parabolic

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What causes chromatic aberration?

Different colours refracting by different amounts

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Silicon is _______, which makes is useful in CCDs.

A semiconductor

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Below the pixels are:

Potential wells

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Other cards in this set

Card 2

Front

Images seen through a telescope can be:

Back

Only real

Card 3

Front

The focal point can be found by:

Back

Card 4

Front

How far from the objective lens is the principle focus?

Back

Card 5

Front

A reflecting telescope uses:

Back

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AQA Astronomy - Optical Telescopes