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B00DSXW5OU Price: $319.55 Score: 1000.000 Category: Electronics Rating: 4.3 Votes: 88 Find similar products Celestron 93648 Deluxe Off-Axis Guider (Black). The Off-Axis Guider is an essential astroimaging accessory for long focal length telescopes that require the most accurate guiding possible. The Celestron Off-Axis Guider uses a prism to intercept a small portion of the telescope’s focal plane (outside the field of view of the main imaging camera) to locate a guide star. Any movement seen by the guide star will be the exact same movement seen by the imaging camera. Guiding this way will correct for tracking errors, as well as opto-mechanical errors or flexure. The result: better astroimages with pinpoint round stars.Off-Axis Guiders have been around for a long time, but typically pose three main challenges:1 Finding a guide star from the far edges of the telescope’s focal plane can be difficult, considering the small field of view and sometimes less-than-ideal illumination.2 Getting both imaging camera and autoguider to reach focus with one another is time consuming and sometimes requires experimentation.3 Additional spacers and adapters are usually required for your particular camera, telescope, and autoguider, which adds to cost and complexity.Celestron's Off-Axis Guider addresses these challenges by:1 Providing a large 12.5 mm prism that can be adjusted to move closer to the center of the telescope’s focal plane, depending on the size of the imaging camera. This results in brighter guide stars, with the help of the large prism to fully illuminate the autoguider sensor.2 Featuring a high-quality, fixed-orientation Helical focuser. This provides extremely smooth and accurate focus of the autoguider without changing (or twisting) the autoguider camera orientation.3 Including all the needed spacers and adapters are included for most common imaging configurations, including DSLR cameras, Nightscape CCD cameras, and more. The following adapters are included: SCT/EdgeHD, female M48, female M42 (T-thread), male M48, male M42 (T-thread), 3 T-thread spacers Additional SpecificationsHelical Focuser Travel: 8mmTelescope Connection: M42 T-thread, M48, and SCT/EdgeHDAutoguider Connection: M42 T-thread, and standard 1.25 adapterCamera Connection: M42 T-thread, and M48.	B001TIE1D4 Price: $71.36 Score: 7.407 Category: Electronics Rating: 4.1 Votes: 51 Find similar products Celestron Polar Axis Finder for CG-4 (Omni) Mounts. Get some help polar aligning your Celestron Omni or CG-4 mount with the addition of the Polar Axis Finder. Install the finder into the polar finder port, located at the rear of the mount, and focus the eyepiece until the reticle is sharp. The reticle is etched with a few recognizable star patterns to help you align your telescope. If you are using your telescope in the Northern Hemisphere, you will recognize the Big Dipper asterism on the reticle, as well as the familiar âWâ of Cassiopeia. Use the Big Dipper to guide you in the spring and summer months, and Cassiopeia during the fall and winter. The North Star, Polaris, is also designated on the reticle, as is the NCP, or North Celestial Pole. Once you choose which star pattern to use, align your telescope so that the stars line up with the positions shown on the reticle, then move the telescopeâs azimuth and altitude adjustment controls to place Polaris in the crosshairs. The Celestron Polar Axis Finder can also be used in the Southern Hemisphere. Four stars of the constellation Octans are etched in the reticle. Adjust your telescope until those stars line up as shown on the reticle.
B0069VXKM4 Availability: Currently unavailable Score: 6.849 Category: Electronics Rating: 3.7 Votes: 13 Find similar products Orion 3640 Collimating Telescope Eyepiece. From the Manufacturer Economical collimation tool ensures that your reflector telescope's optics are in precise alignment. Combination 5 long sight tube and 1.25 Cheshire eyepiece. For aligning optics of Newtonian reflectors, Dobsonian reflectors, and Schmidt-Cassegrain Telescopes (SCTs). Peephole in top and crosshairs at bottom enable precise optical centering. Compatible with 1.25 telescope focusers or 2 focusers with a step-down adapter for using 1.25 accessories.	B07XQXTG9Y Availability: Currently unavailable Score: 6.757 Category: Electronics Rating: 1 Votes: 1 Find similar products Omegon Apochromatic Refractor Pro APO AP 71/450 Quadruplet OTA. Better astrophotos that help you discover the sky in a new way. What is it that drives astrophotographers time and again? It is the fascination of depicting the sky in its most beautiful colours and shapes. With this apochromat, you can do just that. The premium ED glass and a colour-pure image make for enjoyable observations with fine details that would not be possible with basic optics. Rediscover the sky. Why these optics reveal more details No more images without contrast. This apochromat shows what is really possible: pure-colour and high-contrast observations and astrophotos. The key is a sophisticated optical design with premium ED glass for a crystal-clear image. Compared to most mirror systems, the better-defined optics allow you to see more and finer details when observing the planets, for example. All surfaces of the lens elements are treated with an effective multi-coating to prevent reflections. Enjoy memorable observations and shots. 2.5 focuser with gearing and ball bearings This 2.5 geared focuser is a small spatial miracle, and large enough that no shading occurs. An ingenious hybrid technology comprising a Crayford focuser and a gear wheel makes it particularly strong and suitable for accessories weighing up to 4kg. The ball bearings provide for smooth focusing, allowing you to easily find the perfect focus. A 1:10 reduction gearing makes precise focusing a breeze. Astrophotographers around the world value precisely these features. 360° rotation for framing the perfect photo. You found the object and focused on it, but with the wrong orientation? Save yourself the trouble of having to start over again at night to align an elongated object with the sensor. This is ea.
B0053ZUW28 Availability: Currently unavailable Score: 6.667 Category: Electronics Rating: 3.7 Votes: 32 Find similar products Deluxe Telescope Camera Adapter Kit for Nikon SLR / DSLR - 1.25 Variable Eyepiece Projection & Prime Focus. This Deluxe Adapter kit is used to connect Nikon DSLRs to most Telescopes accepting 1.25 Eyepieces. Included in this kit: Our Deluxe Variable Eyepiece Projection adapter , a Prime Focus adapter, a T-Ring to fit Nikon DSLRs, a Parfocalizing ring and basic setup instructions. The Variable feature lets you adjust the adapter length to vary the magnification (thus image size) for perfect framing of your shots. The Parfocalizing Ring lets you to match the focus of a spare eyepiece with your Camera setup for easier focusing. Fits most Plossl eyepieces up to 26mm FL (max 1.5 Upper Body Diameter). Fits all Nikon Film or Digital SLR Cameras including: D1, D2, D3, D3S, D3X, D35, D4, D40, D40X, D50, D60, D70, D80, D90, D100, D200, D300, D300S, D600, D700, D750, D800, D800E, D810, D3000, D3100, D3200, D5000, D5100, D5200, D7000, D7100, etc. Does not fit the small Nikon “1” Mirrorless cameras. IMPORTANT NOTES: Not intended for Spotting Scopes. This unit is for astronomical type telescopes that accept standardized 1.25 (lower barrel diameter) slip-in type eyepieces. Additional parts may be required depending on telescope type. Reflectors typically require a Barlow Lens to be placed between the adapter and focuser to extend the focus point. Refractors typically require you to replace the Diagonal with a slightly shorter extension tube to reach focus. This is true of ANY adapter. Most SCTs and Maks won't require anything else. Assembled unit with T-Ring weighs ~8.8oz (without eyepiece and camera). Pictures shown are representative of the product line. There may be small differences depending on the model of your camera or incremental improvements to the item. Not compatible with ETX 60/70/80 telescopes due to lack of back focus. Not recommended for Reflectors smaller than 4, Refractors smaller than 60mm or Catadioptrics smaller than 90mm.	B0B4T5K35F Price: $42.49 Score: 6.623 Category: Electronics Rating: 4.5 Votes: 132 Find similar products Orion 1.25-Inch Variable Universal Camera Adapter. The 1.25 Variable Universal Camera Adapters allow attachment of a camera body to reflector and refractor telescopes for either prime-focus or telescope eyepiece-projection photography (hence the term universal). The adapter slides into the eyepiece holder as an eyepiece normally would. This universal adapter is composed of two detachable parts: a prime-focus adapter (or T-adapter) for prime-focus photography, and a fixed-length or variable extension tube for eyepiece-projection photography. A thumbscrew in the extension tube holds the telescope eyepiece in place. This combination of prime-focus and eyepiece-projection camera adapter has a sliding barrel design that allows variable projection distances. This allows for slight changes in magnification without swapping telescope eyepieces when performing eyepiece-projection photography. Fits reflector and refractor telescopes with 1.25 eyepiece holders. This Variable-Power Universal Camera Adapter is precision made of black-anodized aluminum and is compatible with 1.25 telescope focusers and many 1.25 telescope eyepieces (some eyepieces have housing diameters that are too large to fit inside the adapter). The barrel of the adapter is threaded for filters. A T-ring for your specific camera model (sold separately) is required to couple your camera body to the universal adapter.
B0001YA9MY Availability: Currently unavailable Score: 6.536 Category: Electronics Rating: 3.7 Votes: 7 Find similar products ScopeTronix Digi-T Digital Camera Adapter T-ring for 1.25 Eyepieces, Requires Step Rings to Fit Camera. The Digi-T system is quick, secure, and easy to use.Less Vignetting - When coupling a digital camera to a telescope it is imperative that the eyepiece lens and the camera lens are as close together as possible, a separation of even 1/2 will result in an image like looking through a soda straw. When installed onto the eyepiece Digi-T is flush with the top. Thanks to Digi-T's exclusive thread-through-thread design the step ring then threads completely over it, adding zero length. No other adapter gets as close!Fits More Eyepieces - There are 2 types of conventional eyepiece projection adapters, fixed length and variable. The fixed length adapters are too short to hold the most popular eyepieces (such as the 26mm Super Plossl) and too narrow to hold many others. The variable length adapters are designed for film cameras and are simply too long to allow the close coupling necessary for digital cameras, in addition they are still too narrow to hold any of the wider field eyepieces. Digi-T fits a 4mm Plossl or a 40mm Plossl!No Back Focus Problems - All conventional eyepiece projection adapters have one thing in common, they lift the eyepiece up in the holder by about 1. For many refractors and reflectors this is a serious problem as they can no longer reach focus! This is especially true with the popular ETX60/70 telescopes. Since Digi-T attaches to the top of the eyepiece it doesn't change the eyepiece position at all and focus remains the same.	B08CKSWK7B Price: $44.79 Score: 6.452 Category: Electronics Rating: 4.5 Votes: 72 Find similar products Celestron 93653-A 1.25-Inch Visual Back Metal Adapter (Black). A Visual Back is a metal adapter that screws onto the standard rear cell threads of Schmidt-Cassegrain and Maksutov-Cassegrain telescopes and accepts 1.25” accessories, including diagonals, eyepieces (for straight-through viewing), Barlows, webcams, and any other accessory with a 1.25” insert barrel. All Celestron 5”, 6”, 8”, 9.25” and 11” Schmidt-Cassegrains come standard with the 1.25” Visual Back. To use 2” diagonals on a Celestron 5” - 11” Schmidt-Cassegrain, remove the visual back and thread on a 2” diagonal made especially for Schmidt-Cassegrain telescopes, such as the Celestron 2” XLT Diagonal (#93527).
B0000XMXVG Availability: Currently unavailable Score: 6.410 Category: Electronics Rating: 3.8 Votes: 26 Find similar products Orion 7330 Polar Alignment Scope for SkyView Pro Mount. From the Manufacturer Handy scope makes polar-aligning the SkyView Pro equatorial telescope mount a cinch. Built-in reticle pattern includes Big Dipper and a target-spot for Polaris - just place Polaris in the circle and you're mount is all set for manual or motorized tracking!. Easy installation - Polar-Axis Finder Scope threads directly into SkyView Pro mount housing along R.A. (right-ascension) axis. Quick polar-alignment gives you more time to enjoy the view at the telescope eyepiece. Ensures accurate tracking and slow-motion control for your SkyView Pro telescope mount.	B01GS9POXY Price: $649.95 Score: 6.410 Category: Electronics Rating: 4 Votes: 38 Find similar products Celestron StarSense AutoAlign - Sky-Watcher SynScan, Black (94006). Star sense technology was innovated by celestron’s engineers, allowing a Celestron computerized telescope to automatically align itself with the night sky. It’s never been easier to locate celestial objects. Now, this technology can be ported to a computerized sky-watcher mount with this new interface box, further expanding the number of scopes that can take advantage of starsense’s revolutionary auto alignment! how it works: star sense camera and hand control both plug into the interface box and the interface box plugs into the mounted hand control port. In minutes your sky watcher mount is aligned and you are off to the stars.