![]() ![]() These are called catadioptric telescopes. Some optical tubes have both lenses and mirrors. ![]() The optical tube has the lens in the front (refractor) or mirror in the back (reflector or Newtonian) that is used to gather light. Optical Tube – This is the part that most people think of as the telescope. You might want to note which are the pieces that match to your telescope. Because this is a general guide I will touch on things that may not apply to your telescope. I am going to overview the parts of the system so you have a better understanding as you read this guide and other articles on telescopes and astronomy. Parts of a Telescope and their FunctionĪ telescope is a system of parts that work together to present an image to your eye. You will learn what they mean and how to use telescopes to have an awesome celestial observing experience. I will define terms like aperture, focal length, optical tube, mount, focuser, and eyepiece. ![]() This first time telescope user’s guide is exactly what you are looking for. You followed the assembly guide and now you want to get the most you can out of your investment. ![]()
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