Provides a description of the free software used to perform a "star-test" on a telescope.

Designed to examine, analyze and achieve maximum efficiency of optical systems used in telescopes.

Innovates and examines mirror telescopes used to magnify images of distant objects. Provides details about instrument designs and downloadable software systems.

Designed to evaluate the performance of optical systems. Includes a a gallery of pictures that highlights its features.

Presents a downloadable software used to make schematic drawings of setting circles for altazimuth and equatorial mounts.