Several manufacturers use the aperture to identify their telescope. You can find astrophotography "how to" tips and share your best astronomy pictures here. The size of the telescope determines how much light the eyepiece collects, and directs impacts on image quality. NASA’s Jet Propulsion Laboratory, Pasadena, California A method is proposed for end-to-end, full aperture testing of large-aperture telescopes using an innovative variation of a Hartmann mask. Visit the Orion Community Center for in-depth information on telescopes, binoculars, and astrophotography. Full aperture testing of large-aperture telescopes is performed without the need for an equally large-aperture autocollimating flat. And when you're stargazing, Orion's telescope cases and covers, observing gear, red LED flashlights, astronomy books and star charts will make your observing sessions more convenient, comfortable and meaningful.Īt Orion, we are committed to sharing our knowledge and passion for astronomy and astrophotography with the amateur astronomy community. Volume: 463, 2nd ATST-EAST Workshop in Solar Physics: Magnetic Fields. Capture breathtaking photos with our affordable astrophotography cameras. Paper: Expected Performance of Adaptive Optics in Large Aperture Solar Telescopes. ![]() Expand your viewing experience with accessories ranging from moon filters to power-boosting Barlow lenses to advanced computerized telescope mounts. Detector Image Gallery Readout Electronics Software development Engagement, Mentorship and Climate expand child menu. Small Aperture Telescope Gallery Detectors expand child menu. Large Aperture Telescope Gallery Small Aperture Telescopes expand child menu. Orion's telescope and astrophotography accessories will enhance your telescope enjoyment without breaking the bank. Large Aperture Telescope expand child menu. We offer binoculars for every viewing interest, including astronomical binoculars, compact binoculars, waterproof binoculars, birding binoculars, and sport and hunting binoculars. Orion binoculars are known for quality optics at a great price. Not sure how to choose a telescope? Orion's Telescope Buyer's Guide is a great place to start. Because we sell direct, we can offer you tremendous value at a great price. From our entry level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. Orion offers telescopes for every level: Beginner, Intermediate, Advanced, and Expert. Our 100% satisfaction guarantee says it all. ![]() Now an employee-owned company, we pride ourselves on an unswerving commitment to best quality products, value and unmatched customer care. Since 1975 Orion Telescopes & Binoculars has been offering telescopes for sale direct to customers.
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