http://www.telescopes.org Telescope reviews, buying guides, information about astronomy and articles about space Wed, 13 May 2009 16:25:32 +0000 http://backend.userland.com/rss092 en Dobsonian and Newtonian telescopes are both reflector telescopes, utilizing a mirror and not lenses to see into space. The term Newtonian refers to the actual telescope itself; whereas, the term Dobsonian refers to the telescope with its altazimuth mount. An Altazimuth mount, also known as an alt-azimuth mount, is a very simple ... http://www.telescopes.org/telescopes/dobsonian-vs-newtonian-telescopes/ Reflector telescopes are a good choice for beginner astronomers. Reflector telescopes, sometimes called Dobsonian or Newtonian telescopes, are great telescopes for those just getting started in astronomy for a number of reasons. Generally, reflector telescopes are relatively inexpensive to produce, when compared to similar refractor telescopes and similar catadioptric telescopes. The relatively low ... http://www.telescopes.org/telescopes/why-choose-a-reflector-telescope/ What do you actually get when you upgrade from a child's telescope to a beginner's telescope or from a beginner's telescope to an intermediate telescope? Almost always, when you upgrade your telescope, you are paying for three elements; portability, optical quality and build quality. For portability, you should expect your upgrade to ... http://www.telescopes.org/telescopes/telescope-upgrading/ Before you even purchase your first telescope, the very first thing that you need to buy is a plastic planisphere, or a star map, so that you can learn the constellations to be able to navigate your way through the night sky. You need to purchase a planisphere for the correct ... http://www.telescopes.org/accessories/planisphere/ When buying a telescope eyepiece or binoculars, an important consideration is eye relief, which is the distance between the exit pupil of the optical system and the entrance pupil of the eye; in other words, how much space there is between last element (the farthest back piece) of the the ... http://www.telescopes.org/telescopes/eye-relief-and-why-it-matters/ The World Wide Telescope project is software that allows your computer to act as a telescope, presenting you with the best images from ground based and space based telescopes from around the world, where you are able to take guided tours from astronomers and educators, who happen to work out ... http://www.telescopes.org/astronomy/world-wide-telescope-project/