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Catadioptric Telescopes

Items 1 - 25 of 96

Celestron NexStar 5SE Schmidt-Cassegrain Computerized Telescope 11036

SKU: CEL-11036
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 125mm (4.92")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$699.00 $599.00

Celestron NexStar 4SE Maksutov-Cassegrain Computerized Telescope - 11049

SKU: CEL-11049
  • Optical Design: Maksutov-Cassegrain
  • Telescope Aperture: 102mm (4.02")
  • Focal Ratio: f/13
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
Available Used from $499.00
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$499.00 $399.00

Celestron NexStar 6SE Computerized Telescope - 11068

SKU: CEL-11068
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 150mm (5.9")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$799.00 $699.00

Celestron NexStar 8SE Computerized Telescope - 11069

SKU: CEL-11069
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 203mm (7.99")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$1,199.00 $999.00

Celestron CPC 800 SCT Computerized Telescope with Free 2" Diagonal - 11073-XLT

SKU: CEL-11073-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$1,999.00 $1,799.00

Celestron 925 CPC SCT Computerized Telescope with Free 2" Diagonal - 11074-XLT

SKU: CEL-11074-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$2,499.00 $2,249.00

Celestron CPC 1100 11" SCT Computerized Telescope with Free 2" Diagonal - 11075-XLT

SKU: CEL-11075-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 279.4mm (11")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$2,999.00 $2,699.00

Celestron SkyProdigy 6 Computerized Telescope - 11076

SKU: CEL-11076
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 152mm (5.98")
  • Focal Ratio: f/9.9
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$899.00

Celestron Advanced VX Series 8" Schmidt-Cassegrain Go To Telescope - 12026

SKU: CEL-12026
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
  • Extra Free Accessories: Celestron Polar Scope for AVX Mount
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$1,739.00

Celestron Advanced VX Series 9.25" Schmidt-Cassegrain Go To Telescope - 12046

SKU: CEL-12046
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
  • Extra Free Accessories: Celestron Polar Scope for AVX Mount
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$2,249.00

Celestron Advanced VX Series 11" Schmidt-Cassegrain Go To Telescope - 12067

SKU: CEL-12067
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 280mm (11.02")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
  • Extra Free Accessories: Celestron Polar Scope for AVX Mount
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$2,859.00

Celestron Advanced VX Series 6" Schmidt Cassegrain Go To Telescope - 12079

SKU: CEL-12079
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 150mm (5.9")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
  • Extra Free Accessories: Celestron Polar Scope for AVX Mount
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$1,329.00

Celestron NexStar 90 SLT Computerized Telescope - 22087

SKU: CEL-22087
  • Optical Design: Maksutov-Cassegrain
  • Telescope Aperture: 90mm (3.54")
  • Focal Ratio: f/13.9
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$419.95 $359.00

Celestron NexStar 127 SLT Computerized Telescope - 22097

SKU: CEL-22097
  • Optical Design: Maksutov-Cassegrain
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/12
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$549.95 $479.00

Celestron NexStar 8SE Computerized Telescope - 11069 - Used

SKU: UEQ-11563-CEL-11069
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 203mm (7.99")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$1,199.00 $999.00
$1,199.00 $950.00

Celestron NexStar 8SE Computer Telescope Bundle with Hard Case - 11069-BUN5

SKU: CEL-11069-BUN5
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
  • Bundle includes an eyepiece & filter kit, custom hard case,, 12V Power Tank, AC Adapter, a light pollution filter & a cleaning tool!
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$1,574.95

Celestron C8-A SCT Aluminum Optical Tube with CGE Dovetail - CEL-91024-XLT

SKU: CEL-91024-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,049.95 $795.95

Celestron C9.25 SCT Aluminum Optical Tube with CG-5 Dovetail - 91025-XLT

SKU: CEL-91025-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,499.95 $1,184.95

Celestron C9.25 SCT Aluminum Optical Tube with CGE Dovetail - 91027-XLT

SKU: CEL-91027-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 235mm (9.25")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,469.95 $1,184.95

Celestron C11 SCT Aluminum Optical Tube with CGE Dovetail - 91036-XLT

SKU: CEL-91036-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 279.4mm (11")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,469.95 $1,779.95

Celestron C14AF-XLT - 14" Aluminum SCT Fastar-Compatible Optical Tube with CGE Dovetail - 91038-XLT

SKU: CEL-91038-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 355.6mm (14")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$4,999.95 $4,049.95

Celestron C11 SCT Aluminum OTA with CG-5 Dovetail - 91067-XLT

SKU: CEL-91067-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 279.4mm (11")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,499.95 $1,824.95

Celestron NexStar 8SE SCT OTA Orange Tube - 11069-OTA

SKU: CEL-11069-OTA
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$849.95 $679.95

Celestron C6-A SCT Optical Tube with CG-5 Dovetail - 91010-XLT

SKU: CEL-91010-XLT
  • Optical Design: Schmidt-Cassegrain
  • Telescope Aperture: 150mm (5.9")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$649.95 $398.95

The LX600 Catadioptric telescope design uses a combination of mirrors and lenses to gather light and form a sharp image. There is a wide range of popular telescopes for amateur astronomers, such as Schmidt-Cassegrain and Maksutov-Cassegrain telescopes, that are of the catadioptric design. There are also catadioptric telescopes for sale that are designed primarily for astrophotography or imaging, like the Ritchey-Chretien (RC), Meade ACF, and Celestron EdgeHD.

The Schmidt-Cassegrain Telescope, or SCT, is the most popular design in the broader catadioptric telescope line-up. The Schmidt-Cassegrain has a folded optical system consisting of a primary mirror and a corrector plate with the secondary mirror right in the center. This design allows the telescope tube to be much more compact than a Newtonian reflector or a Refractor. The most popular Schmidt-Cassegrain has a large 8" diameter mirror and an optical tube that is about 18" long - a perfect combination of good light-gathering and easy-to-carry portability.

The Maksutov-Cassegrain, or Mak-Cass, catadioptric telescope looks very much like an SCT but has a longer focal length due to the way the light travels inside the tube. The Maksutov-Cassegrain really shines when used for terrestrial or astronomical viewing, especially when turned to the Moon or planets, but it isn't the best choice for deep-sky astrophotography due to its long focal length when compared other catadioptric designs.

Catadioptrics optimized for imaging are rising in popularity as more amateur astronomers fall under the spell of astrophotography. These telescopes have a wide, flat field that works nicely with today's larger format DSLR and dedicated astronomy cameras. While many catadioptric telescopes for sale can be used for both visual astronomy and imaging, amateur astronomers who prefer visual observations or have a camera with a smaller sensor don't necessarily require the edge-to-edge flatness that a larger sensor does.

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