6A70.23 - Telescopes - Refractors and Reflectors

Code Number:
Demo Title:
Telescopes - Refractors and Reflectors
Lens Systems and Focal Lengths
Area of Study:
Refractor Telescopes, 14 Inch Reflector Telescope with Plexiglas Body, 6 Inch Plexiglas Demo Reflecting Telescope, Galileoscope, Spyglass Variable Length Telescopes, and Tasco Telescope.

See also 8D20.40 in Astronomy.

The refractors and 14 inch reflector telescopes are mainly for show and tell as their focal lengths do not allow you to see images of any object inside the classroom.

The Galileoscope and the Spyglass telescopes are ready to go at a moments notice.  You will need to adjust the length on each telescope to bring your viewing object into focus.  This adjustment will be critical when trying to image something in the Lecture Rooms.

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Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.