The eyepiece goes directly into the focuser, and you'll get an inverted (upside down) image. The Galilean or terrestrial telescope uses a positive objective and a negative eyepiece. This type of telescope is called a refracting telescope. A (refracting) telescope consists of two convex lenses. I'm happy with 8x42. Terrestrial (adjective) Adapted for the observation of objects on land and on the earth; as, a terrestrial telescope, in distinction from an astronomical telescope. Fine for astronomy, a pain for terrestrial use. They focus the light and make distant objects appear brighter, clearer and magnified. I like hand held binos for astronomy since I have telescopes for high power. Terrestrial and Astronomical Telescope - definition Telescopes use lenses to gather more light than the human eye could collect on its own. It would drive me frantic for terrestrial use though. Other scope types - like refractors, Schmidt cassegrain telescopes (SCTs), and Maksutov cassegrain telescopes, use a diagonal … Galilean Telescope. This 360x70mm refractor Astronomy adjustable telescope can be an excellent observation of terrestrial objects as well as the moon. It gives erect images and is shorter than the astronomical telescope with the same power. Consisting of land, in distinction from water; belonging to, or inhabiting, the land or ground, in distinction from trees, water, or the like; as, terrestrial serpents. Olly Edited December 4, 2017 by ollypenrice Typo It's angular magnification is -f o /f e.. CSSEA Astronomical telescope is the best telescope for kids and adults. You can provide them the best gift to educate them to explore the world, life, and nature. You do not need any tool to set. Also marine and astronomical binoculars will be used close to infinity so having individual focus on each side is no detriment.