Telescope Tube Assembly
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Meade 20218 NG-70SM 70mm Altazimuth Refractor Telescope
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DescriptionMEADE 20218 NG-70SM 70mm Altazimuth Refractor Telescope Meade 20218 NG-70SM 70mm Altazimuth Refractor Telescope Meade's value priced NG-70SM Altazimuth Refractor is an affordable entry level telescope that features an easy to use Altazimuth mount with slow motion controls for precise tracking. The complete package includes a sturdy metal tripod, a red dot viewfinder, two 1.25 inch eyepieces and a star diagonal, and a software DVD with instructional video. The NG-70SM Refractor Telescope comes disassembled in a compact box, but the instructional DVD video guides you through all the steps required for assembly. Go ahead and try it out in the daytime, that's the best time to align the red-dot finder scope while looking at a distant tree or telephone pole. The optics of Meade's NG-70SM produce an image that is right side up but the diagonal mirror reverses the image left-to-right. That's no problem most of the time, but an optional correct image diagonal is available. The low power 25mm eyepiece produces a magnification 28X which is just right for spotting the Moon or the planets, while the 9mm eyepiece (78X magnification) can be used to zoom in for more detail. The MH25 eyepiece at 28X shows a lovely view of the Lunar disk in a dark sky, while the MH9 eyepiece at 78X shows literally hundreds of craters on the Moon and begins to show the rings of Saturn and the cloud bands of Jupiter. For even better views it's easy to add better eyepieces. My best view of Saturn, for example, came with an optional 6.4mm Super Plossl eyepiece, about 110X magnification. The Altazimuth mount included with Meade's NG-70SM is lighter and easier to use than an Equatorial mount, yet the slow motion knobs make it easy to keep objects in view. The rotation of the Earth causes the Moon or planets to appear to drift out of the eyepiece, but the slow motion knobs make it easy to keep the telescope on target, even with a high power eyepiece. The telescope is sensitive to vibration, however, so a high power eyepiece can be difficult to focus. Meade's NG-70SM is a good entry level telescope at a very good price. The optics are good, the Altazimuth mount is easy to assemble and easy to use, the instructional DVD includes a nice Lunar Atlas as well as planetarium software, and it's easy to add better eyepieces to improve your view of the planets. –Jeff Phillips Pros: Light and easy to use Altazimuth mount includes slow motion knobs Easy to add better eyepieces Instructional DVD included; Cons: MH eyepieces have narrow field of view Vibrates while focusing at high power Features
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Query Reflector Telescopes?
Hi, I want to know if some sort of Newtonian reflector telescope OTA (optical tube) can be used with custom Dobsonian mount made? if so, does anyone have any idea if the following models of Sky-Watcher telescope can be used with Dobsonian mount. so the price of EQ mount get reduced and money can be invested in the purchase of more open or accessories. 1. SKP13065 with EQ2 mount (diameter: 130 mm, focal: 650 mm) 2. SK1501 with EQ3-2 mount (diameter: length 150 mm, focal length: 1000mm) 3. SKP2001 with EQ5 mount (diameter: 200 mm, Focal Length: 1000mm) 4. SKP25012 with EQ6 mount (diameter: 250 mm in length, focal: 1200 mm)
Geoff is correct, you can buy a commercial manufacturing assembly optical tube and put it in a homemade Dobsonian assembly. While the OTA has a solid tube, make a base will be easy. As telescopes go, no other telescope gives the bang for the buck that a Newton on a Dobsonian mount does. However, using the best wood you can find to make the base and sealed with polyurethane for outdoor use. Any other coating degrades and not due to changes in temperature and acid mist. For bearings, the use of Ebony Star Formica and Teflon pads movement of a soft butter Dobsonian well. If you have access to a table saw, router and drill press, I recommend that you use to build your base. They are cutting the pieces, making bearings altitude, the arches cut and precise punching holes easier. The use of glue, not that kind Gorilla glue, make him a gorilla when contact with the plywood and hands. If you can, use a biscuit joiner or pins to align and hold parts in the clamping position, while that, you need a system of anchor rods or tubes. You should make the altitude bearings at least as large as the primary mirror to avoid the creation of a rocker effect. Land Council must have the same diameter or larger than the diagonal through the rocker cover, and there should be three feet with a Teflon pad directly above them to avoid wobble. If you do not have the tools for woodworking, a cabinetmaker or furniture can be constructed base. All you need to know is the diameter tube and center of gravity of the OTA is to design and build a good base.
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 Meade 76MM optical telescope reflector tube assembly  US $29.95
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 Celestron Tasco 4 Telescope F 129 Maksutov Optical Tube Assembly US $51.02
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Meade 20218 NG-70SM 70mm Altazimuth Refractor Telescope
List Price: |
DescriptionMeade 20218 NG-70SM 70mm Altazimuth Refractor Telescope Meade's value priced NG-70SM Altazimuth Refractor is an affordable entry level telescope that features an easy to use Altazimuth mount with slow motion controls for precise tracking. The complete package includes a sturdy metal tripod, a red dot viewfinder, two 1.25 inch eyepieces and a star diagonal, and a software DVD with instructional video. The NG-70SM Refractor Telescope comes disassembled in a compact box, but the instructional DVD video guides you through all the steps required for assembly. Go ahead and try it out in the daytime, that's the best time to align the red-dot finder scope while looking at a distant tree or telephone pole. The optics of Meade's NG-70SM produce an image that is right side up but the diagonal mirror reverses the image left-to-right. That's no problem most of the time, but an optional correct image diagonal is available. The low power 25mm eyepiece produces a magnification 28X which is just right for spotting the Moon or the planets, while the 9mm eyepiece (78X magnification) can be used to zoom in for more detail. The MH25 eyepiece at 28X shows a lovely view of the Lunar disk in a dark sky, while the MH9 eyepiece at 78X shows literally hundreds of craters on the Moon and begins to show the rings of Saturn and the cloud bands of Jupiter. For even better views it's easy to add better eyepieces. My best view of Saturn, for example, came with an optional 6.4mm Super Plossl eyepiece, about 110X magnification. The Altazimuth mount included with Meade's NG-70SM is lighter and easier to use than an Equatorial mount, yet the slow motion knobs make it easy to keep objects in view. The rotation of the Earth causes the Moon or planets to appear to drift out of the eyepiece, but the slow motion knobs make it easy to keep the telescope on target, even with a high power eyepiece. The telescope is sensitive to vibration, however, so a high power eyepiece can be difficult to focus. Meade's NG-70SM is a good entry level telescope at a very good price. The optics are good, the Altazimuth mount is easy to assemble and easy to use, the instructional DVD includes a nice Lunar Atlas as well as planetarium software, and it's easy to add better eyepieces to improve your view of the planets. –Jeff Phillips Pros: Light and easy to use Altazimuth mount includes slow motion knobs Easy to add better eyepieces Instructional DVD included; Cons: MH eyepieces have narrow field of view Vibrates while focusing at high power MEADE 20218 NG-70SM 70mm Altazimuth Refractor Telescope Features
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Orion ShortTube 80 Refractor Telescope Optical Tube Assembly
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DescriptionThis version of the popular ShortTube 80 is sold without accessories. It is ideal for use as a guide scope with a CCD autoguider. All air-to-glass surfaces are now fully multicoated, ensuring maximum light transmission for enhanced brightness and clarity. The ST80's 80mm objective doublet lens and 400mm focal length (f/5.0) deliver bright, wide-field images. Only 15-1/2" in length, the ST80 is easily portable. The 1.25" cast aluminum rack-and-pinion focuser has a focus lock knob and a dovetail fitting to accommodate Orion finder scopes. For use as a guidescope, use guidescope rings (sold separately). One-year limited warranty. Dovetail mounting bar not included. Features
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Celestron C6-A-XLT Optical Tube Assembly OTA Telescope w/ StarBright XLT Coatings for 91010-XLT
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DescriptionCelestron C6-A-XLT Optical Tube Assembly OTA Telescope w/ StarBright XLT Coatings for CG-5 Mount Features
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Orion Apex 90mm Maksutov-Cassegrain Telescope
Sale Price: $229.99 |
DescriptionWith a tube length of 11 inches, a 90mm (3.5") precision-polished fully multi-coated meniscus front lens, and solid uncompromising construction. the Apex 90 Compact Mak is a paragon of portability, optical excellence, and durability. Better still, it's one of the most versatile scopes we offer. The Apex 90 delivers bright, high-contrast images, and with a focal length of 1250mm (f/13.9) you also get a generous image scale. It features a built-in 1/4"-20 adapter plate that makes it easy to mount onto a standard photo tripod for viewing grand daytime vistas. Attach a 35mm camera to the scope's visual back (with a T-ring adapter sold separately) and use the whole assembly as powerful telephoto lens for astrophotography and terrestrial shooting. What more could you want? Includes a 25mm Plossl eyepiece, 6x20 finder scope, 45-deg correct-image diagonal, and fully padded carrying case. One-year limited warranty. Features
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182mm ID Orion Telescope Tube Rings
Sale Price: $44.99 |
DescriptionThese cast-aluminum rings feature quick-release, hinged clamp knobs and felt lining. They are designed for use with the Orion EQ-1, EQ-2, EQ-3, or AZ-3 mounts, and may fit some other mounts as well. One of the two rings in each set has a 1/4"-20 piggyback camera adapter on it, the other has a threaded 1/4"-20 hole. Sold in sets of two rings. Mounting bolts and washers are included. Inside diameter (i.d.) is 182mm/7.2". One-year limited warranty. Features
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298mm ID Orion Telescope Tube Rings
Sale Price: $89.99 |
DescriptionOur cast-aluminum tube rings feature quick-release, hinged clamp knobs and felt lining. Designed for use with Orion mounts, they fit some other brands of mounts as well. One of the two rings in each set has a 1/4"-20 piggyback camera adapter on it, the other has a threaded 1/4"-20 hole. The piggyback camera adapter can be removed for mounting an adapter plate for a guide scope on top of the tube rings. Inside diameter (i.d.) is 298mm/11.7". One-year limited warranty. Features
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BARSKA 40070 Starwatcher Compact Refractor Telescope with Table Top Tripod And Carrying Case
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DescriptionAn ideal entry-level telescope for amateur astronomers, the Barska Starwatcher 300-power telescope brings you closer than ever to the stars and planets. The refractor telescope is equipped with such features as coated glass optics for enhanced image brightness, interchangeable eyepieces with 3x Barlow lenses for increased viewing power, and smooth-functioning mounts. For good measure, Barska added a beginner's version of the highly popular Deepsky Astronomy software, which is packed with a searchable database of more than 10,000 objects, including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on your PC and begin your journey to the stars and planets. Bundled with a sturdy adjustable tripod and a soft carrying case, the telescope carries Barska's limited lifetime warranty. Specifications Max power: 300x Focal length: 400mm Finder scope: 5x24 Draw tube: 1.25 inches Eyepiece 1: SR4 Eyepiece 2: K20 Diagonal: 45 degrees Warranty: Limited lifetime About Barska Barska is a worldwide sport optics company with strong brand recognition within the optics industry, with corporate offices in La Verne, California, and warehouses and distribution centers in La Verne and Shanghai, China. Barska offers an extensive line of precision sport optics products, such as binoculars, riflescopes, spotting scopes, and telescopes. The product range has been designed and built with the latest optical technology, allowing users to enjoy all their favorite leisure time outdoor activities, including bird watching, outdoor observation, hunting, fishing, stargazing, concerts, and sporting events. The Barska 40070 Starwatcher Compact Refractor Telescope with Table Top Tripod and Carrying Case is an ideal telescope for the aspiring amateur astronomer. Ideal for students or those interested in learning more about the night sky, the 70mm objective lens can zoom up to 300x power. Use one of the interchangeable eyepieces with a 3x power Barlow lens for increased viewing capability. A pan-head mount and tripod is included with the telescope along with a handy carrying case. Take this portable telescope outdoors at night and the stars will open up before your eyes. There's an amazing show to be seen in the night sky and this Barska travel telescope is a great tool. You get a totally portable 300x telescope with a 70mm objective lens and a tabletop tripod. You also get a copy of the highly popular Deep Sky software, which includes a searchable database of over 10,000 celestial objects and a What's Up Wizard that delivers a list of what is visible at the observer's location. The telescope is a precision optical instrument that is perfect for the aspiring astronomer on the go. Includes the telescope, finder scope, eyepieces, software and a carry case. Features
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Bushnell Northstar 300 x 90mm Motorized Telescope w/ Real Voice Output
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DescriptionThe NorthStar Telescope from Bushnell makes it possible for amateur astronomers to identify, locate, and track celestial objects with simple, push-button control. Combining high-quality optics with computer-driven location technology and a built-in database of 20,000 celestial objects, the NorthStar unveils the mysteries of the night sky. The telescope comes with a hand-held remote control module that allows you to call up your target by entering a simple "Go To" command. The NorthStar computer then locates the target, and once locked on to the target, tracks it automatically for prolonged viewing. Meanwhile, the innovative RVO (Real Voice Output) feature on the remote provides a fun, interactive way to explore the night sky. The telescope also features a 1x wide-angle, red dot, finderscope that allows the user to quickly sight in on areas of the sky and find objects quickly. The NorthStar Telescope comes complete with a quick-release tripod, kinematic mount, and an accessory tray for fast, easy assembly. Features and Specifications: 1250 by 90-millimeter Motorized GoTo Maksutov-Cassegrain Magnifications: 50x, 312.5x 4 and 25 millimeter eyepieces Erect image diagonal mirror for land viewing "Go To" computerized tracking technology Red Dot LED finderscope Remote hand-held control module with Real Voice Output (RVO) Camera adaptable Quick release tripod Kinematic mount Accessory tray Maksutov-Cassegrain Design This design utilizes a spherically curved front lens element in conjunction with a similarly curved primary mirror, providing sharp images in a compact folded-light path package. The total optical system provides a focal length much longer than the actual optical tube body length. "GO TO" Computerized Star Locator The Go To Star Locator utilizes an on-board computer and advanced motorized technology to allow you to quickly locate and automatically follow over 20,000 pre-programmed astronomical objects with the touch of a button. Educational descriptions of each object are also provided. Talking, Hand-Held, Remote Control Module The hand-held control module features red, backlit push buttons and a red, illuminated LCD read-out for easy viewing that won't impair your night vision. The talking feature of the remote describes the night sky with the touch of a button, in a real human voice. Kinematic Mount This simple yet high-precision altaz mount features three points of contact in both the horizontal and vertical planes for optimum shape, so that you can set up your view quickly, easily, and accurately. 1250 X 90MM MOTORIZED GOTO MAKSUTOV-CASSEGRAIN TELESCOPE4MM & 25MM EYEPIECESERECT IMAGE DIAGONAL MIRROR FOR LANDING VIEWGO TO COMPUTERIZED TRACKING TECHNOLOGYRED DOT LED FINDERSCOPEREMOTE HAND-HELD CONTROL MODULE WITH REAL VOICE OUTPUT CAMERA ADAPTABLEQUICK RELEASE TRIPODKINEMATIC MOUNTACCESSORY TRAYUPC : 029757788894Shipping Dimensions : 42.75in X 18.50in X 10.00inEstimated Shipping Weight : 47.6431 Features
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