Stargazing Basics starmap A properly figured parabolic primary

A properly figured parabolic primary mirror will eliminate spherical aberrations by bringing the light rays to the same focal point

The accuracy of the figure

Celestron's Revolutionary SkyAlign

This refined instrument features a doublet objective lens which provides a highly corrected image and excellent optical performance

Stargazing Basics starmap A properly figured parabolic primaryWritten by Paul E Kinzer How do I get started in astronomy? Should I buy binoculars or a telescope? What can I expect to see? This wonderful beginners' guide to astronomy covers all the information you need to get started. This second edition has been fully updated and now includes new illustrations, the latest astronomy equipment and celestial events through to the year 2025. It starts by explaining the basic techniques and equipment you need for