Ministerio de Educación (Spain)
Ministerio De Educacion: Instrumentacion Astronomica Modulo I Unidad 2
In this unit you will combine all the major components of a telescope to obtain the desired system for different types of astronomical observations.
Ministerio de Educación (Spain)
Ministerio De Educacion: Instrumentos Auxiliaries Modulo I Unidad 3
In this unit you will learn the main advantages and disadvantages offered by the refractor and reflector telescopes for a particular observation. You will also learn about the main types of telescopes.
University of Chicago
University of Chicago: History of Yerkes Observatory
Read about the history of the Yerkes Observatory, which was run by the University of Chicago. This observatory houses one of the few research grade refractors in the world. The observatory was closed in October 2018 and discussions were...
University of Chicago
University of Chicago: Reflector and Refractor
From the Yerkes Observatory Virtual Tour web site. Compares and contrasts reflecting and refracting telescopes. A link from the page leads to a second page which explains why most modern research telescopes are reflecting telescopes.