Astronomy 100
description
Transcript of Astronomy 100
![Page 1: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/1.jpg)
Astronomy 100
What’s the ‘Scope?
![Page 2: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/2.jpg)
• 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.
![Page 3: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/3.jpg)
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.
![Page 4: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/4.jpg)
• Do the different telescopes have all the same parts, or are there differences?
![Page 5: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/5.jpg)
Galileo
• http://www.marcdatabase.com/~lemur/lemur.com/gallery-of-antiquarian-technology/philosophical-instruments/galileo-singer/galileo-telescopes-150-434-830.jpg
![Page 6: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/6.jpg)
Refractor
• Lenses• http://mmejia28.wordpress.com/2008/09/07/project-i/
![Page 7: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/7.jpg)
Reflector
• Mirrors• http://www.camcentre.co.uk/shop/index.php?act=viewProd&productId=29
![Page 8: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/8.jpg)
Cassegrain/Folded Optics
• Mirrorsand
• Lenses
![Page 9: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/9.jpg)
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
![Page 10: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/10.jpg)
http://www.everythingweather.com/atmospheric-radiation/transmissionwindow2.gif
Atmospheric Absorption
![Page 11: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/11.jpg)
Hubble (Visible)
![Page 12: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/12.jpg)
http://chandra.harvard.edu/graphics/resources/illustrations/chandra_trw_300.jpg
Chandra (X-Ray)
![Page 13: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/13.jpg)
Arecibo (Radio)
![Page 14: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/14.jpg)
James Webb (Infrared)
http://jwst.gsfc.nasa.gov/images_jwst.html
![Page 15: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/15.jpg)
Why is Hubble in Space?
• Seeing
Why is Chandra in Space?
• Can’t do X-Rays from here
![Page 16: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/16.jpg)
![Page 17: Astronomy 100](https://reader035.fdocuments.us/reader035/viewer/2022062723/56813ce5550346895da68f3d/html5/thumbnails/17.jpg)
• http://www.uk-telescopes.co.uk/beginners_guide%20to%20telescopes.htm
• http://www.nasa.gov