Catadioptric Binoculars & Telescopes

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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.

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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

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Galileo G-102MD Electronic Catadioptric Telescope is half the telescope with twice the ability. In some cases, shorter is better. This is one of them. The catadioptric feature has a correcting lens built into the optical tube that extends the focal...

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

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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°.

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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.

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Ease of use and impeccable optical quality make the FS-102DX2 Catadioptric Telescope a favorite of beginner and casual star gazers alike! The astronomical telescope is mounted on the Super Glide Altitude Azimuth mount, with up, down, left and right...

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Galileo 1000mm-102mm Galileo German Equatorial Catadioptric Telescope G-102MD2

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The VMC200L mounted on the new Porta II Mount starts your observing sessions faster and takes you farther into the universe. The VMC200L is a unique catadioptric optical system. It incorporates a primary mirror and a meniscus corrector just before a...

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Schmidt Cassegrain -Catadioptric Telescope - Objective Lens Size: 127 mm - Magnification: 387.5x

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Schmidt Cassegrain -Catadioptric Telescope - Objective Lens Size: 50 mm - Magnification: 7x

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

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Meade ETX-90AT, ETX-105AT, and ETX-125AT models build on the original ETX concept to create the most advanced electronically-controlled telescopes including automatic GO TO object-location with the Autostar Computer Controller ever produced in their price range. And yet without sacrificing any of the user-friendly features that started the ETX revolution. Optical Systems: Manufactured at the Meade Irvine, California, facility, ETX Maksutov-Cassegrain telescopes produce superlative, diffraction-limited optical performance and resolution. Optics so high in contrast, image brightness, and resolution that ETX-90AT, ETX-105AT, and ETX-125AT models often outperform many telescopes of larger apertures. Fork Mounts with Standard-Equipment Dual-Axis Drive System and #497 Autostar Controller: The rigid fork mountings of ETX Maksutov-Cassegrain models include high-torque DC motors on both telescope axes, permitting electronic operation from the standard-equipment Autostar controller. With the telescope placed in the altazimuth mode on a table, astronomical object-tracking may be accomplished automatically, after a quick and easy 2-minute alignment of Autostar to the sky. Alternately, the telescope may be mounted in either the altazimuth or equatorial modes on the standard-equipment #884 Deluxe Field Tripod. Cordless Field Operation: The drive base of each telescope accepts eight (user-supplied) AA-batteries that power the telescope for about 20 hou

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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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[Auth Celestron Dealer!] 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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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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Ease of use and impeccable optical quality make the FS-102DX2 Catadioptric Telescope a favorite of beginner and casual star gazers alike! The astronomical telescope is mounted on the Super Glide Altitude Azimuth mount, with up, down, left and right...