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Astronomy 101

Astronomy 101. Telescopes. Telescopes. Refractor Newtonian Compound Reflector. Refractor telescope. Newtonian Telescope. Cassegrain telescope. Eyepieces. Best beginner telescope. Pair of Binoculars Tripod Binocular adaptor Cheap, reusable, and great for a beginner.

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Astronomy 101

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  1. Astronomy 101 Telescopes

  2. Telescopes Refractor Newtonian Compound Reflector

  3. Refractor telescope

  4. Newtonian Telescope

  5. Cassegrain telescope

  6. Eyepieces

  7. Best beginner telescope • Pair of Binoculars • Tripod • Binocular adaptor Cheap, reusable, and great for a beginner.

  8. Image orientation • Binoculars 4 elements Correct orientation • Newtonian telescope 3 elements, Backwards • Refractor telescope 2 elements, Upside-Down Diagonals can be used to correct this.

  9. Finder scopes

  10. How to use a finder scope Magnifying finder scope • Use the “two eye” method – Keep both eyes open, the object rises in one and falls in the other. Non Magnifying finder scope (Telrad) • Put the object in the middle circle • Look in a low power eyepiece.

  11. Next talk • Computing Magnification. • Field of view • Stellar magnitudes • Star colors • Types of objects to look for • Messier catalog

  12. Comet ISON • Look for this comet in Sept of 2013. • Currently 6.6 AU from the Sun • Should turn non next year • 30% chance of a fantastic comet • 60% chance of a dud…

  13. Path of comet ISON

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