UW-Madison AST 113 - Telescopes (15 pages)

Previewing pages 1, 2, 3, 4, 5 of 15 page document View the full content.
View Full Document

Telescopes



Previewing pages 1, 2, 3, 4, 5 of actual document.

View the full content.
View Full Document
View Full Document

Telescopes

24 views

Other


Pages:
15
School:
University of Wisconsin, Madison
Course:
Ast 113 - Hands on the Universe

Unformatted text preview:

ASTRONOMY 113 Laboratory Lab 3 Telescopes Perhaps no scientific instrument is as closely associated with a field of study as is the telescope to astronomy And yet arguably the telescope is also the most misunderstood of scientific instruments so closely associated is the telescope with the word magnification First and foremost an astronomical telescope is a light bucket designed to collect light A celestial object such as a star emits light in all directions After traveling for thousands of years across billions of kilometers a tiny portion of that light rains down on the hemisphere of the Earth facing that star Almost all of that light does nothing more than be absorbed by the atmosphere or the ground ever so slightly heating up the Earth An infinitesimal portion of the star s light strikes the lens or mirror of a telescope and is directed into an eye or onto a piece of film or through a spectrograph The bigger the diameter of the lens or mirror the more light that is guided to the detector and the more knowledge that is gained about the Universe This is the basic fact that underlies astronomers never ending quest for telescopes of larger diameter Considered broadly telescopes are all around you in optical devices of other names cameras eyes binoculars eyeglasses and more The details of the optics in each of these telescopes dictates how effectively the collected light is used The goal of this lab is to give you a feel for optics through recreation of that marvelous device of Galileo the telescope 3 1 10 5 09 Before You Come to Class Read the lab completely Your time in the lab is best used observing the sky not reading this manual Complete the pre lab assignment Bring to class this lab manual your lab book a pencil or erasable pen a straight edge and a scientific calculator Schedule This lab is designed to be completed in two lab sessions 3 2 10 5 09 Section 1 The Simple Telescope A Primer To make a telescope all you need is one lens1 appropriately curved This



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Telescopes and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Telescopes and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?