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Astronomy 100

Astronomy 100. What’s 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.

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Astronomy 100

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  1. Astronomy 100 What’s the ‘Scope?

  2. 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.

  3. 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 don’t 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.

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

  5. Galileo • http://www.marcdatabase.com/~lemur/lemur.com/gallery-of-antiquarian-technology/philosophical-instruments/galileo-singer/galileo-telescopes-150-434-830.jpg

  6. Refractor • Lenses • http://mmejia28.wordpress.com/2008/09/07/project-i/

  7. Reflector • Mirrors • http://www.camcentre.co.uk/shop/index.php?act=viewProd&productId=29

  8. Cassegrain/Folded Optics • Mirrors and • Lenses

  9. 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

  10. Atmospheric Absorption http://www.everythingweather.com/atmospheric-radiation/transmissionwindow2.gif

  11. Hubble (Visible)

  12. Chandra (X-Ray) http://chandra.harvard.edu/graphics/resources/illustrations/chandra_trw_300.jpg

  13. Arecibo (Radio)

  14. James Webb (Infrared) http://jwst.gsfc.nasa.gov/images_jwst.html

  15. Why is Hubble in Space? • Seeing Why is Chandra in Space? • Can’t do X-Rays from here

  16. http://www.uk-telescopes.co.uk/beginners_guide%20to%20telescopes.htmhttp://www.uk-telescopes.co.uk/beginners_guide%20to%20telescopes.htm • http://www.nasa.gov

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