Astronomy 100 Whats the Scope?. ANSWER NOW: Sketch a telescope. SECOND GOAL: understand why we need telescopes, how a telescope works, and that you need.

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Presentation transcript:

Astronomy 100 Whats the Scope?

ANSWER NOW: Sketch a telescope. SECOND GOAL: understand why we need telescopes, how a telescope works, and that you need different scopes for different reasons/types of light.

Here are 3 Telescopes Split into 3 groups. One person record. One person report back. Everyone contribute. Identify the different parts of your telescope. You dont need to use the right words, but pick out and give a name to each of the parts you think is important. Good Example: the tube – very important. Bad Example: the screws holding something together. Do I care? No.

Do the different telescopes have all the same parts, or are there differences?

Galileo technology/philosophical-instruments/galileo- singer/galileo-telescopes jpg

Refractor Lenses

Reflector Mirrors

Cassegrain/Folded Optics Mirrors and Lenses

What does a telescope DO? Main lens/mirros – Collect LOTS of light, focus it down. – NOT MAGNIFYING Eyepiece – MAGNIFIES – Bigger number, bigger eyepiece, less magnification

Atmospheric Absorption

Hubble (Visible)

Chandra (X-Ray)

Arecibo (Radio)

James Webb (Infrared)

Why is Hubble in Space? Seeing Why is Chandra in Space? Cant do X-Rays from here

telescopes.co.uk/beginners_guide%20to%20t elescopes.htm telescopes.co.uk/beginners_guide%20to%20t elescopes.htm