How to Choose

This technical report introduces basic astronomy equipment, specifically binoculars and telescopes, to the beginner. The report is geared toward urban dwellers who live in less-than-ideal viewing conditions, i.e., areas with much light pollution, and, therefore, must travel to find better conditions. This report also considers the economics of astronomy equipment because amateur astronomers have different needs from professional astronomers, but the former do not have financial grants like many of the latter.

To put the equipment in perspective, I discuss the goals and the basic components of a telescope and binoculars. Then, I characterize binoculars and the three basic types of telescopes: refractors, reflectors and catadioptrics. The equipment is characterized by structure, uses, maintenance and portability, and relative cost. It is relative cost because the amount of money that is worthwhile for a piece of equipment depends on what can and cannot be accomplished with another model.

Hopefully, knowing some of the principles will help budding observers to feel more comfortable when purchasing equipment. Their apprehension is justified because a usable pair of binoculars—the cheapest piece of viewing equipment—starts at $200.00. Readers will finish this document with a better understanding of how to personalize their equipment. Personalization will prevent observers from wasting time and money, will prepare them for what they can and cannot see, and will excite them to make observing the rewarding experience it is.

However, this report alone should not induce one to purchase. Rather, it should prime prospective buyers, giving them an idea of what they are looking for to further research a suitable piece of equipment. There are many Websites that address the differences between astronomical equipment very thoroughly; this report should help to narrow the options.


Telescopes for Beginners | Contact J. Rahm | Last Updated April 2, 2004 | Back to the Top