No matter how large your telescope or how high your magnification, a star in the night sky is going to look like just the star you can see with your naked eye because it is so far away. Deep sky objects, such as galaxies and nebulae, are relatively large and dim and require larger apertures, low magnification and dark skies. With the moon and planets, it is possible to push the magnification 100x or higher, because they are bright objects within our solar system. The beautiful images you see online and in magazines are products of astrophotography, which requires expensive telescopes and cameras with long photographic exposures. Proper use of a viewfinder will greatly reduce frustration with your telescope. Make sure this device contains good batteries and is aligned with the telescope tube. Newer telescopes are sold with an electronic reflex finder, which is a little window that superimposes a red dot or crosshair on the sky. When using your telescope, start with the lowest-power eyepiece to find an object more easily.Ī viewfinder is the small attachment on the side of the optical tube that resembles a miniature telescope. If you use a 10mm eyepiece, increase the magnification to 90x. For example: If your telescope has a 900mm focal length and a 25mm eyepiece, the magnification is 36x. For example, if you have a 60mm (2.36-inch) telescope, your image may break down over 80x magnification (2.36 x 35 = 82.6).Ī simple formula for calculating magnification is the focal length of the telescope (in millimeters) divided by the focal length of the eyepiece. How much is too much? My rule of thumb is 35x per inch of aperture. In astronomy, more magnification is not always better. The focal length can be found on the side of the telescope tube or in the owner’s manual. ![]() Knowing your focal length will also help you calculate the magnifying power of your telescope. ![]() Your aperture determines how much light-gathering ability your telescope holds and which astronomical objects it is suited to view. Focal length is the distance, from that lens or mirror, in which it focuses light. Aperture is the diameter of the main lens or mirror. Two important telescope specifics are aperture and focal length. Most telescopes provide great views of the moon, but objects further into the solar system require more preparation. Understanding the specifics of your telescope will enable you to better gauge its capabilities and limitations. Selling a telescope near you is easy using TelescopeTrader.Bill Reed, Planetarium Specialist and NASA Solar System Ambassadorĭid you buy a telescope and cannot figure out how to use it? Seeing nothing but fuzz through the eyepiece? Below are five tips for new telescope owners. A big welcome to our Astromart, CloudyNights, Craigslist, and eBay customers! Some of the brands in high demand include Astro-Tech, AWB, Bresser, Celestron, Epsilon, Explore Scientific, Galileo, GSO, Hubble Optics, Intelliscope, JML, Meade, Orion, Questar, Royce Optics, Sky Watcher, Starblast, Takahashi, Tecron, Telcat, Zhumell, and ZWO. We are a 100% user-supported astro buy and sell marketplace. ![]() TelescopeTrader Classifieds offers affordable astronomy equipment ads since 2017. Why Sell Telescopes on TelescopeTrader Classifieds?
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |