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Catadioptric Telescopes

23 Items

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
 

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 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
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$1,329.00 $1,199.00
 

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
 

Meade 6" ACF LightSwitch Computerized Telescope - 0610-03-10

SKU: MEA-0610-03-10
  • Optical Design: Meade ACF
  • Telescope Aperture: 152.4mm (6")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$1,599.00
 

Celestron NexStar 6SE Computerized Telescope - 11068

SKU: UEQ-11595-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 $660.00
 

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
 

Orion StarMax 127 Maksutov-Cassegrain EQ Telescope - 09826

SKU: ORI-09826
  • Optical Design: Maksutov-Cassegrain
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/12.1
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Manual Mount - No Electronics
$599.99
 

Celestron NexStar 6SE Telescope Bundle with Star Sense - 11068-BUN3

SKU: CEL-11068-BUN3
  • 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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$1,328.95 $1,228.95
 
Celestron NexStar 6SE Bundle with AC Adapter, Powertank & Eyepiece Kit

Celestron NexStar 6SE Telescope Bundle - 11068-BUN1

SKU: CEL-11068-BUN1
  • 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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$1,029.85 $899.00
 
GSO 8" f/8 RC Ritchey-Chretien OTA with Dual Dovetails

GSO 8" f/8 Ritchey-Chretien Optical Tube - Carbon Fiber OTA - 8RC

SKU: GSO-8RC
  • Optical Design: Ritchey-Chretien
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/8
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,395.00
 
Celestron Evolution 6 Telescope Bundle

Celestron NexStar Evolution 6 Telescope Bundle - 12090-BUN1

SKU: CEL-12090-BUN1
  • 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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$1,550.90 $1,399.95
 

Skywatcher Skymax 127 mm Maksutov-Cassegrain Telescope OTA - S11520

SKU: SKY-S11520
  • Optical Design: Maksutov-Cassegrain
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/12
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$435.00
 

Celestron 6" NexStar Evolution Computerized Telescope - 12090

SKU: CEL-12090
  • 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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$1,299.00
 
GSO 8" f/8 Ritchey-Chretien - Steel OTA

GSO 8" f/8 Ritchey-Chretien Optical Tube - Steel OTA - 8RCS

SKU: GSO-8RCS
  • Optical Design: Ritchey-Chretien
  • Telescope Aperture: 203.2mm (8")
  • Focal Ratio: f/8
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$899.00 $809.00
 
iOptron Photron 200 RC Telescope OTA

iOptron 8" Photron RC Telescope OTA - 6112

SKU: IOP-6112
  • Optical Design: Ritchey-Chretien
  • Telescope Aperture: 200mm (7.87")
  • Focal Ratio: f/8
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$895.00
 
iOptron Photron 200 Ritchey-Chretien Telescope

iOptron Photron 200 RC Telescope Package with iEQ45 Pro Mount & 2" Tripod - 12200

SKU: IOP-12200
  • Optical Design: Ritchey-Chretien
  • Telescope Aperture: 200mm (7.87")
  • Focal Ratio: f/8
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Manual Mount - No Electronics
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$2,598.00
 
SkyWatcher 127 mm Skymax Mak-Cass Telescope OTA with AZ-GTi Alt-Az Mount & Tripod

Sky-Watcher 127 mm Skymax Maksutov-Cassegrain OTA with AZ-GTi Multi-Purpose Mount & Tripod - S21130

SKU: SKY-S21130
  • Optical Design: Maksutov-Cassegrain
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/12.1
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$725.00
 
Meade 6" ACF Telescope on LX85 GoTo Equatorial Mount

Meade 6" ACF Telescope on LX85 GoTo Equatorial Mount - 217005

SKU: MEA-217005
  • Optical Design: Meade ACF
  • Telescope Aperture: 152mm (5.98")
  • Focal Ratio: f/10
  • Telescope Mount Type: Equatorial
  • Type of Electronics: Computerized GoTo
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$1,399.00
 
Meade 6" LX65 ACF Telescope with Single Arm Mount

Meade 6" LX65 ACF Telescope with Alt-Az Single-Arm GoTo Mount - 228003

SKU: MEA-228003
  • Optical Design: Meade ACF
  • Telescope Aperture: 152.4mm (6")
  • Focal Ratio: f/10
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$999.00
 
Meade 6" LX85 ACF Optical Tube Assembly

Meade 6" LX85 ACF Optical Tube Assembly - 217024

SKU: MEA-217024
  • Optical Design: Meade ACF
  • Telescope Aperture: 152.4mm (6")
  • Focal Ratio: f/10
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$729.00
 
Meade 6" LX65 ACF Optical Tube Assembly

Meade 6" LX65 ACF Optical Tube Assembly - 228013

SKU: MEA-228013
  • Optical Design: Meade ACF
  • 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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$759.00
 
Orion StarSeeker IV 127 mm GoTo Maksutov-Cassegrain Telescope and Mount

Orion StarSeeker IV 127 mm GoTo Maksutov-Cassegrain Telescope - 13163

SKU: ORI-13163
  • Optical Design: Maksutov-Cassegrain
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/12.1
  • Telescope Mount Type: Alt-Azimuth
  • Type of Electronics: Computerized GoTo
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$699.99
 

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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