Not sure how to choose a telescope? Now an employee-owned company, we pride ourselves on an unswerving commitment to best quality products, value and unmatched customer care. Premium components and exceptional attention to detail are used throughout the construction of this monster, including all stainless steel fasteners, a Moonlite dual-speed, fine adjustment 2" focuser and custom secondary cage light baffle. The top cage is aluminum with carbon graphite spacers between the top and bottom rings. The atmosphere above us is constantly in motion, and it will distort the image seen through the telescope. Premium hand-figured optics by Normand Fullum
Fast f/3.75 focal ratio gives bright images, and 187.5" of focal length - great for hunting faint galaxies and small planetary nebulae - or anything else up there! This monstrous light grasp lets you capture some seriously faint objects and bring out the details other observers have only seen in photographs. For binoculars, the optical diameter (also known as objective lens diameter) is the size of each of the front-facing objective lenses of a binocular measured in millimeters. }, This product is no longer available for purchase. Referring to the manual is recommended. ServoCAT(TM)* tracking and GoTo system; can be controlled from most popular planetarium programs for robotic telescope control
A 75% down payment will be required to place your order. Starry Night Special Edition software. Orion's Telescope Buyer's Guide is a great place to start. Moonlite, Argo-Navis, and StellarCAT are trademarks or their respective companies. Apr 2, 2014 - 50 Inch Telescope at Mount Stromlo Observatory layers: '' Standard achromatic refractors routinely use Crown and Flint for the two elements, but more expensive apochromatic refractors can use ED (extra low dispersion) glass for one or more of the lenses. Only one element of the optical system ? Cassegrain telescopes routinely use spheres in addition to other lenses in the optical path to correct for residual spherical aberration. Ebony Star and UHMW bearings
The 1.3m telescope
Refractors use glass lenses to focus the light, and the glass material plays an important role in the quality of the resulting image. This warranty is for the benefit of the original retail purchaser only. Lastly, the biggest telescope we could find was this 65-inch aperture model from Canadian manufacturer Optiques Fullum. Orion is a world leader in Dobsonian telescopes. The distance from the center of a curved mirror or lens at which parallel light rays converge to a single point. The limiting stellar magnitude is a measure of the faintest star you can see through the telescope. When an item is not in-stock we will ship it as soon as it becomes available. Refractor telescopes refract, or "bend" incoming light to a focus by means of an objective lens. Capture breathtaking photos with our affordable astrophotography cameras. If a motor drive is attached to an equatorial mount, even a small lightweight mount is capable of capturing some planetary detail. February 2013, but due to damage by the mirror coater, the mirror
Some mounts are compatible with a motorized Go-To system for fully automated computer finding of objects in the night sky. You can literally go where no man or woman has gone before. Try direct vision - you'll get used to it. 17-layer Russian Birch & aluminum bonded composite, 5 cooling accelerator fans, Argo-Navis digital setting circles, 36 point floatation mirror cell, Carbon fiber struts, Engineered honeycomb primary mirror. mirror blank was supplied by Peter Wangsness and the optical work was
of service, the 50 inch telescope has surpassed our expectations with
This product is no longer available for purchase. Some larger professional observatory telescopes are occasionally open to the public, but access is limited and viewing is usually restricted to a few "showcase" objects. Binoculars with larger objective lenses are recommended for low light situations, and binoculars with at least 50mm or larger objective lenses are recommended for pleasing astronomical observations at night. Mar 19, 2014 - 50 Inch Telescope at Mount Stromlo Observatory 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. With a limiting stellar magnitude that is approximately +17.4 and a theoretical resolving power under a tenth of an arc second (seeing conditions limited, of course) you are going to be catching details in the ?faint-fuzzies? The main struts are also carbon graphite with Moonlite connectors for easy disassembly, should you want to transport this beast. And consider adding our email address (news@oriontelescopenews.com) to your email safe senders list, address book or contact list. The mirror was finished and put into operation
Since 1975 Orion Telescopes & Binoculars has been offering telescopes for sale direct to customers. The highest practical limit is different from the often used "highest theoretical magnification" specification. Visit the Orion Community Center for in-depth information on telescopes, binoculars, and astrophotography. Referring to the manual is highly recommended. The estimated expected shipping date is displayed, but this is only an estimate. August 2014 over a year later that expected. Das Newton-Teleskop (nach Sir Isaak Newton 1643-1727) hat eine weitreichende Verbreitung bei den früheren Astronomen gefunden und ist noch heutzutage bei den Amateuren sehr beliebt. 6 carbon graphite collapsible truss tubes with Moonlite(TM)* truss-tube connections
The Orion 50" Dob is the bigger brother of the Orion 36 and 40 inch Monster Dobsonians and is the biggest amateur telescope in the world. They may be technically involved or designed for specialized use, such as astrophotography or detailed deep sky observation. Once your order is received you will be contacted by your Orion representative. Because we sell direct, we can offer you tremendous value at a great price. The mirror was completed in
Cassegrain telescopes, such as Maksutov-Cassegrains, "fold" incoming light using two mirrors and a front "corrector" lens. But after approximately 300x, theory breaks down and real world problems take over. Ordering Information:
That?s almost double the light the Orion 36" Dob will capture; four times what a 25" telescope can collect, or 16 times what a 12.5" gathers! For telescopes, the optical diameter (also known as aperture) is the size of a telescope's main light-collecting lens or primary mirror, measured in millimeters or inches. Advanced Level - These scopes provide the best performance but may require more skill to master and appreciate. The astro-photographic capability of the telescope is based on the style, stability, and accuracy of the mount and tripod. Dual-Speed 2" Moonlite(TM)* Crayford focuser w/1.25" telescope eyepiece adapter and adjustable focusing tension
Referring to the manual is recommended. Fifty inches of aperture. At Orion we?ve known that bigger is better and have wanted to take the art of Dobsonian telescope making to new limits.