Catadioptric (Cassegrain) Telescopes

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Celestron Origin Intelligent Home Observatory
New Release

Celestron Origin Intelligent Home Observatory

B&H # CECOIHO MFR # 12099
Key Features
  • 6"/152mm f/2.2 RASA Optical Tube
  • Computerized GoTo Alt-Az Mount
  • Displays Imagery on Phone or Device
  • Sony Starvis CMOS Sensor, 2.4µ Pixels
$3,99900
New Item - Coming Soon
Expected availability: Beginning of Apr 2024
Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope

Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope

B&H # CEN8SE MFR # 11069
Key Features
  • 203mm Schmidt-Cassegrain Telescope
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Single-Fork Motorized GoTo Alt-Az Mount
$1,59900
In Stock

Celestron EdgeHD CGE 8" f/10 Aplanatic Schmidt-Cassegrain Telescope (OTA Only)

B&H # CEEDGEHD800 MFR # 91030-XLT
Key Features
  • 8" (203mm) Schmidt-Cassegrain OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • EdgeHD Aplanatic Field-Flattener Design
$1,59900
In Stock
Other Buying Options

Celestron NexStar Evolution 6 Schmidt-Cassegrain Telescope and EclipSmart Solar Filter Kit

B&H # CENSE6SFK
Key Features
  • 150mm Schmidt-Cassegrain OTA
  • Wireless Control with iOS/Android App
  • NexStar Computer Hand Controller
  • ISO Compliant Safe Solar Filter
$1,54895
Reg. $1,728.95
Save $180.00
In Stock

Sky-Watcher Skymax 102 AZ-GTi 102mm f/13 GoTo Maksutov-Cassegrain Telescope

B&H # SKS21120 MFR # S21120
Key Features
  • 102mm Aperture Maksutov-Cassegrain OTA
  • 1300mm Focal Length, f/13 Focal Ratio
  • Limited-Diffraction Optical System
  • Motorized Computer-Controlled AZ Mount
$49078
In Stock

Celestron NexStar Evolution 8 203mm f/10 EdgeHD Aplanatic Cassegrain GoTo Telescope with StarSense AutoAlign

B&H # CENE8ESTR MFR # 12096
Key Features
  • 203mm Aplanatic Catadioptric OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • Flat-Field, Coma-Free EdgeHD Optics
  • StarBright XLT Optical Coating System
$2,69900
Reg. $2,949.00
Save $250.00
In Stock

Sky-Watcher Virtuoso 90mm f/13.9 Maksutov-Cassegrain Multi-Purpose Motorized Mount

B&H # SKVVM MFR # S11750
Key Features
  • 90mm Maksutov-Cassegrain OTA
  • 1250mm Focal Length, f/13.9 Focal Ratio
  • Camera, Camcorder, Smartphone Mounts
  • Motorized Alt-Az Tabletop Mount
$37500
In Stock
Other Buying Options

Celestron NexStar 90SLT 90mm f/14 Maksutov-Cassegrain GoTo Telescope

B&H # CEN90SLT MFR # 22087
Key Features
  • 90mm Maksutov-Cassegrain OTA
  • 1250mm Focal Length, f/14 Focal Ratio
  • Single-Arm Motorized Alt-Az Mount
  • Fully Multi-Coated Optics
$44072
In Stock

Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope

B&H # CEN4SE MFR # 11049
Key Features
  • 102mm Maksutov-Cassegrain Telescope
  • 1325mm Focal Length, f/13 Focal Ratio
  • StarBright XLT Optical Coating System
  • NexStar+ Computer Hand Controller
$67900
In Stock

Celestron NexStar 5SE Schmidt-Cassegrain Telescope and EclipSmart Solar Filter Kit

B&H # CEN5SESFK
Key Features
  • 125mm Schmidt-Cassegrain Telescope
  • 1250mm Focal Length, f/10 Focal Ratio
  • Single-Fork Motorized GoTo Alt-Az Mount
  • ISO Certified Safe Solar Filter
$84895
In Stock

Celestron NexStar 6SE Schmidt-Cassegrain Telescope and EclipSmart Solar Filter Kit

B&H # CEN6SESFK
Key Features
  • 150mm Schmidt-Cassegrain Telescope
  • 1500mm Focal Length, f/10 Focal Ratio
  • Single-Fork Motorized GoTo Alt-Az Mount
  • ISO Certified Safe Solar Filter
$1,14895
Reg. $1,248.95
Save $100.00
In Stock

Celestron NexStar Evolution 6 150mm f/10 Schmidt-Cassegrain GoTo Telescope

B&H # CENSE6 MFR # 12090
Key Features
  • 150mm Schmidt-Cassegrain OTA
  • 1500mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Wireless Control with iOS/Android App
$1,49900
Reg. $1,679.00
Save $180.00
In Stock
Other Buying Options

Celestron NexStar Evolution 8 203mm f/10 Schmidt-Cassegrain GoTo Telescope

B&H # CENSE8 MFR # 12091
Key Features
  • 203mm Schmidt-Cassegrain OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Wireless Control with iOS/Android App
$2,19900
In Stock

Celestron Astro Fi 102mm f/13 Maksutov-Cassegrain Telescope

B&H # CEA102WIFIMK MFR # 22202
Key Features
  • 102mm Maksutov-Cassegrain OTA
  • 1325mm Focal Length, f/13 Focal Ratio
  • 1.25" 10mm and 25mm Eyepieces
  • Single-Arm Motorized Alt-Az Mount
$43143
In Stock

Sky-Watcher 127mm f/13 Maksutov-Cassegrain Telescope (OTA Only)

B&H # SK127MMMCOTA MFR # S11520
Key Features
  • 127mm Aperture Maksutov-Cassegrain OTA
  • 1500mm Focal Length, f/12 Focal Ratio
  • Limited-Diffraction Optical System
  • Fully Multi-Coated Optics
$55000
In Stock

Celestron StarSense Explorer 125mm f/10 Schmidt Cassegrain Telescope

B&H # CESSEDX5SCT MFR # 22462
Key Features
  • Use Smartphone App for Star Navigation
  • Follow Directions to Find Great Objects
  • Advanced Precise Alignment Algorithm
  • 125mm Schmidt-Cassegrain Optical Tube
$59995
Temporarily Out of Stock
Expected availability: 3-5 weeks

Celestron C6-A-XLT CG-5 6" f/10 Schmidt-Cassegrain Telescope (OTA Only)

B&H # CEC6AXLT MFR # 91010-XLT
Key Features
  • 6" (150mm) Schmidt-Cassegrain OTA
  • 1500mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • 25mm Eyepiece and 90° Star Diagonal
$83995
In Stock

Celestron C8-A-XLT CGE 8" f/10 Schmidt-Cassegrain Telescope (OTA Only)

B&H # CEC8AXLT MFR # 91024-XLT
Key Features
  • 8" (203mm) Schmidt-Cassegrain OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • 25mm Eyepiece and 90° Star Diagonal
$1,34995
In Stock
Other Buying Options

Celestron C9 1/4-A XLT 9.25" f/10 Schmidt-Cassegrain Telescope (OTA Only, CGEM Dovetail)

B&H # CEC9.25AXLT MFR # 91027-XLT
Key Features
  • 9.25" Schmidt-Cassegrain OTA
  • 2350mm focal length, f/10 Focal Ratio
  • StarBright XLT Optical Coatings
  • 25mm Eyepiece, 90° Diagonal
$1,89995
In Stock

Celestron Advanced VX 8" f/10 GoTo EQ Schmidt-Cassegrain Telescope

B&H # CEAVX8SCTK MFR # 12026
Key Features
  • 8" (203mm) Schmidt-Cassegrain OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Motorized Computer-Controlled EQ Mount
$2,29900
In Stock

Celestron NexStar Evolution 8 203mm f/10 Schmidt-Cassegrain GoTo Telescope and Accessories Kit

B&H # CENSE8Q
Key Features
  • 8" Schmidt-Cassegrain Telescope
  • 2032mm Focal Length, f/10 Focal Ratio
  • Wireless Control with iOS/Android App
  • Multiple Automatic Alignment Systems
$2,33995
In Stock

Celestron EdgeHD CGE 8" f/10 Aplanatic Schmidt-Cassegrain GoTo EQ Telescope

B&H # CEAVX8EHDK MFR # 12031
Key Features
  • 8" (203mm) Schmidt-Cassegrain OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • EdgeHD Aplanatic Field-Flattener Design
$2,79900
In Stock

Celestron EdgeHD 9.25" f/10 Aplanatic Schmidt-Cassegrain Telescope (OTA Only)

B&H # CEEDGEHD925 MFR # 91040-XLT
Key Features
  • 9.25" (235mm) Schmidt-Cassegrain OTA
  • 2350mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • EdgeHD Aplanatic Field-Flattener Design
$2,99900
In Stock
Other Buying Options

Celestron CPC Deluxe 1100 HD Computerized Telescope

B&H # CE11009K MFR # 11009
Key Features
  • 11" EdgeHD Optical Tube
  • 2800mm Focal Length, f/10 Focal Ratio
  • Dual-Fork Mount with SkyAlign
  • Heavy-Duty Tripod
$4,49900
Reg. $5,099.00
Save $600.00
In Stock

Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain EQ GoTo Telescope

B&H # CECGX1100HDK MFR # 12057
Key Features
  • 11" (280mm) Schmidt-Cassegrain OTA
  • 2800mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • EdgeHD Aplanatic Field-Flattener Design
$6,39900
Back-Ordered

Celestron C14-AF XLT 14" f/11 Schmidt-Cassegrain Telescope (OTA Only, CGE Dovetail)

B&H # CEC14AXLTQ MFR # 91038-XLT
Key Features
  • 14" Schmidt-Cassegrain OTA
  • 3910mm Focal Length, f/11 Focal Ratio
  • StarBright XLT Optical Coatings
  • 40mm 1.25" Eyepiece, Reducer Adapter
$6,49995
In Stock

Celestron CGX-L Equatorial 925 HD Telescope

B&H # CECGXL925HDK MFR # 12075
Key Features
  • 9.25" HD Optical Tube Assembly
  • CGX-L EQ Mount and Tripod
  • StarBright XLT Coatings
  • 9x50 Finderscope
$6,99895
In Stock

Sky-Watcher 102mm f/13 Maksutov-Cassegrain Telescope (OTA Only)

B&H # SK102MMMCOTA MFR # S11510
Key Features
  • 102mm Aperture Maksutov-Cassegrain OTA
  • 1300mm Focal Length, f/13 Focal Ratio
  • Limited-Diffraction Optical System
  • Fully Multi-Coated Optics
$27200
Temporarily Out of Stock
Expected availability: Mar 08, 2024
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Learning About Catadioptric Telescopes

The three major types of reflecting telescopes are Newtonian, Schmidt-Cassegrain (SCTs), and catadioptric (Cassegrain). The catadioptric telescope has dual mirrors to create a folded optical path. Unlike original reflectors (Newtonian), with catadioptric reflectors, light is reflected off the sides of the telescope instead of the back. SCTs have the same folded optical path, but include a thin correction lens at the front of the scope to improve the final image. Maksutov-Cassegrain telescopes have a unique feature as well, a negative lens at the entrance pupil. The main difference between Maksutov and other reflector telescopes is that they don't require alignment before use.


Choosing a Cassegrain Telescope

Select the Cassegrain telescope that fits your specific viewing needs, as not all of them offer the same features. Maksutov-Cassegrain options provide compact sizes and reliable optics for people who live in the city, and they're primarily designed for viewing larger planets and dual stars. SCTs are bulkier but allow viewers to observe galaxies and singular stars in addition to planets. SCT telescopes produce better results in open spaces because city lights can cause glare and poor viewing conditions. Selecting additional accessories such as telescope diagonals and prisms can provide you with clearer planetary viewing and increase detail.


Computerized Telescopes

Celestron-NexStar telescopes come in computerized versions, with Wi-Fi modules that can connect directly to your mobile device via the SkyPortal app. Celestron is famous for creating high-quality refractor telescopes for astronomical and terrestrial viewing. Glass lenses inside these telescope grab light and bend it to produce an image.


B&H Photo and Video carries telescopes and accessories such as cases, lens filters, and stands, to give you the best viewing experience. Amateur astrologists or telescope enthusiasts can also browse through a large selection of all-in-one telescope kits.