Catadioptric

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Galileo 1100x102mm Catadioptric Reflector Telescope White Satin FS1202
 

starting at

$499
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Featuring high-quality Maksutov-Cassegrain optics, the NexStar 4SE is an ideal telescope for observing and photographing the wonders of space. With a total weight of 21 lbs including the tripod, the ultra portable 4 SE features a precision optical system with 1,325 mm focal length (f/13) and is the first Maksutov system to ever feature our premium StarBright XLT coatings. The 4 SE includes a camera control feature that allows you to remotely take a series of timed exposures using your digital SLR camera. Plus the Flip Mirror Control, Straight Through Photographic Port and Tripod featuring a built-in wedge help make short-exposure astrophotography a heavenly experience. Quick release fork arm mount, optical tube and accessory tray for no-tool setup Sturdy computerized altazimuth mount Internal battery compartment to prevent cord wrap during use Ultra sturdy steel tripod features built-in wedge, which allows 4 SE to be used for astrophotography Nearly 40,000 object database with 200 user-definable objects and expanded information on over 200 objects SkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment process Flash upgradeable hand control software and motor control units for downloading product updates over the Internet Custom database lists of all the most famous deep-sky objects by name and catalog number, the most beautiful double, triple and quadruple stars, variable star solar systems, objects and asterisms DC Servo motors with encoders on both axes Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of go to features

starting at

$499
 

starting at

$1,199
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The VMC200L is a unique catadioptric optical system. It incorporates a primary mirror and a meniscus corrector just before a secondary mirror. By doing so, light is corrected twice on the optical path. The end result is that spherical aberration and field curvature are corrected to a high degree of optical performance. The VMC200L's primary mirror is f/2.5; the compound optical system is f/9.75. This makes the system much more compact and portable than its competition. With the optical correction placed before the secondary mirror, the VMC200L avoids the necessity of having a corrector plate and all the dewing problems associated with a closed optical tube. An additional key feature is the rack and pinion focusing that is placed behind the primary mirror. The use of this focusing system eliminates the image shift associated with most other SCT systems. This is especially important when using high power magnification or astro-photography. When focusing, the image is stable and easy to adjust.

starting at

$1,199
 

starting at

$1,850
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The VC200L's catadioptric optical system is one of the most sophisticated optical designs available on the market today and has recently received some manufacturing upgrades. The New VC200L has a lighter-weight optical tube with improved anti reflection coatings, a metal carrying handle and now comes standard with a 7x50 finderscope. If you are looking for a photographic catadioptric, this is an excellent choice. With its unique VISAC (Vixen Sixth-Order Aspheric Cassegrain) primary mirror, the telescope gives a sharp image that is free of chromatic aberration and is flat and sharp to the edge of 35mm film. The VISAC optical system is composed of a concave primary mirror, a convex secondary mirror and a three element field corrector. Especially noteworthy is its sharpness and flatness at the edge, which far exceeds that of Schmidt-Cassegrain systems of the same aperture. It provides a pinpoint star image less than 15 microns, even at the edge of its 42mm image circle. The open tube design eliminates the dew problem that is common with conventional Schmidt-Cassegrain systems and its size makes it very easy to handle. The VC200L is well suited for observation and astrophotography of the moon, planets, star clusters, nebulae, and comets. The rack-and-pinion focusing mount accepts optional 2 eyepieces and accessories, and an f/6.4 reducer for photographic use is also available. The comes supplied with a 7x50 mm finder , a flip m

starting at

$1,850
 

starting at

$80
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Specifically for use in prime focus, deep-sky imaging or astrophotography with Schmidt-Cassegrain telescopes, the Radial Guider is compact and sleek in design. This accessory makes it possible to simultaneously photograph and guide through the optical tube assembly of your telescope. The Radial Guider also eliminates the problem of differential flexure, because you're both guiding and photographing through the telescope. The Radial Guider is compatible with Celestron's C5, C8, C9Œ, C11 and C14 telescopes and comes with a unique prism angle adjustment screw. It must be used with a guiding eyepiece, camera T-Ring and drive corrector (dual axis preferred). Primarily for use with catadioptric telescopes, but also works on refractor telescopes having adequate back focus. This guider is a tremendous improvement over conventional off-axis guilders. Not only is the angle of the prism tunable, but it also maintains a fixed rigid camera orientation while still offering users the freedom to move the guiding eyepiece radially about 135°.

starting at

$80
 
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$164.99

 

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Galileo telescope is mounted on a Super-glide Azimuth mount Telescope is designed for easy up, down, left and right movements Perfect optics for beginners and casual star gazers alike Super-glide mount features slow motion controls in both axis for...
 

starting at

$3,400
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Vixen's unique catadioptric design features a high precision sixth order aspherical primary mirror, a convex secondary mirror and triplet corrector lens. VISAC is an abbreviation for Vixen's Six-Order Aspherical Cassegrain. The primary mirror is held by a retaining ring, instead of hooks to decrease flare and enhance constrast. The VC200L is an 8" f/9.0 highly corrected, highly specialized telescope for astro imaging. The VISAC provides high-definition star images to the edge of a wide viewing field and offers exceptionally outstanding performance in astrophotography. Even at the edge of the 35mm film format (larger CCD chips) stars are sharp (smaller than 15 micrometers). This is smaller than the resolution of fine quality CCD cameras, which means that the telescope does not limit the image quality. With its eleborate aspherical optical design it achieves an excellent image correction throughout the large illuminated field (42mm diameter fully illuminated). With the f/6.4 reducer you get much shorter exposure times. The reducer is a highly recommended optional accessory. The basic configuration includes a pigge-back camera holder. You can take photos both through the telescope and using a telephoto lens parrallel to the main instrument or you can use the VC200L for guiding while the camera sits on top.

starting at

$3,400
 
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The Galileo G-102MD2 catadioptric telescope is Galileo's most popular telescope and for good reason. No where can you find a telescope that is so easy to use has so many features so many accessories and with so much quality for the price. Take your...
 

starting at

$400
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Schmidt Cassegrain -Catadioptric Telescope - Objective Lens Size: 100 mm - Magnification: 199x

starting at

$400
 
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[Special Order - allow extra time] Vixen Optics VMC200L Telescope with GPD2M Mount VMC200L Telescope with GPD2M Mount, 8.0"/200 mm, f/9.7 Catadioptric System, GPD2M Mount, NLV 25 mm Eyepiece, GP-HAL130 Tripod
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starting at

$14,999
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Schmidt Cassegrain -Catadioptric Telescope - Objective Lens Size: 50 mm - Magnification: 7x

starting at

$14,999
 
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Televue BinoVue binocular viewer fits directly into the 1.25" focuser of reflectors, and into the star diagonal of refractors and catadioptric scopes for more comfortable viewing at the zenith. Removable internal 2X image amplifier doubles...
 
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[Special Order - allow extra time] Celestron Lens Shade/Dew Cap Lens Shade/Dew Cap, For the Celestron C6 and C8, For Other 6-8" Catadioptric Scopes
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Galileo Telescopes 1000mm-102mm German Equatorial Catadioptric Telescope G102MD2. Nowhere can you find a telescope that is so easy to use has so many features so many accessories and with so much quality for 300. Take your Galileo G-102MD2 outside at...
 
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This 90mm-diameter Maksutov-Cassegrain Telescope dramatically reduces the chromatic aberration that plagues its Refractor counterparts and has a focal length of 1200mm.
 
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[Special Order - allow extra time] Lumicon SLR Camera Adapter f/ Catadioptric Telescopes SLR Camera Adapter f/ Catadioptric Telescopes, Attaches to 2"-18 Female Threads, Allows Prime Focus Imaging, Requires T-Mount
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[Choose Air Ship 4 Xmas!] C50 Mini Mak 2.0"/50mm Waterproof Catadioptric Spotting Scope Kit C50 Mini Mak 2.0"/50mm Waterproof Catadioptric Spotting Scope Kit, Angled Viewing, Maksutov-Cassegrain Design, 32-52° Apparent Field of View, Includes: 25-75x...
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[Special Order - allow extra time] Vixen Optics VMC95L 3.7"/95mm Catadioptric Telescope Optical Tube Assembly VMC95L 3.7"/95mm Catadioptric Telescope Optical Tube Assembly, 1050mm f/11.1 Maksutov-Cassegrain, Super-Compact "Grab 'N Go" Scope, Built-In...
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