Catadioptric (Cassegrain) Telescopes

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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
$1,29900
Reg. $1,599.00
Save $300.00
Temporarily Out of Stock
Expected availability: Dec 08, 2023
Celestron NexStar Evolution 9.25 235mm f/10 AZ GoTo Schmidt-Cassegrain Telescope

Celestron NexStar Evolution 9.25 235mm f/10 AZ GoTo Schmidt-Cassegrain Telescope

B&H # CENSE9.25K MFR # 12092
Key Features
  • 235mm Schmidt-Cassegrain OTA
  • 2350mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Wireless Control with iOS/Android App
$2,39900
Reg. $2,849.00
Holiday Savings $450.00
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
$2,49900
Reg. $2,949.00
Holiday Savings $450.00
In Stock

Celestron NexStar 5SE 125mm f/10 Schmidt-Cassegrain GoTo Telescope

B&H # CEN5SE MFR # 11036
Key Features
  • 125mm Schmidt-Cassegrain Telescope
  • 1250mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Single-Fork Motorized GoTo Alt-Az Mount
$79900
Reg. $939.00
Holiday Savings $140.00
In Stock

Celestron NexStar 127SLT 127mm f/12 Maksutov-Cassegrain GoTo Telescope

B&H # CEN127SLT MFR # 22097
Key Features
  • 127mm Maksutov-Cassegrain OTA
  • 1500mm Focal Length, f/12 Focal Ratio
  • Single-Arm Motorized Alt-Az Mount
  • NexStar Computer Hand Controller
$61900
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
$53530
Reg. $640.30
Holiday Savings $105.00
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
$1,29900
In Stock

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 8" f/2.0 Rowe-Ackermann Schmidt Astrograph (OTA Only)

B&H # CE8RASAOTA MFR # 91073
Key Features
  • Patented Catadioptric Astrograph Design
  • 400mm Focal Length/ f/2.0 Focal Ratio
  • StarBright XLT Optical Coating System
  • 4-Element Rare-Earth Optical Glass
$2,07900
In Stock

Celestron CPC Deluxe 800 HD 8" f/10 Cassegrain GoTo AZ Telescope

B&H # CE11007K MFR # 11007
Key Features
  • 203.2mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • EdgeHD Aplanatic Field-Flattener Design
  • Motorized GoTo Dual Fork Azimuth Mount
$2,69900
Reg. $3,199.00
Holiday Savings $500.00
In Stock

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

iOptron Photron 200mm f/8 Ritchey-Chrétien Catadioptric Telescope (OTA Only)

B&H # IO6112 MFR # 6112
Key Features
  • 200mm Ritchey-Chrétien Catadioptric OTA
  • 1624mm Focal Length, f/8 Focal Ratio
  • Low Thermal-Expansion Quartz Mirrors
  • Dielectric Mirror Coatings
$1,17800
In Stock

Sky-Watcher 180mm f/15 Maksutov-Cassegrain Telescope (OTA Only)

B&H # SK180MMMCOTA MFR # S11540
Key Features
  • 180mm Aperture Maksutov-Cassegrain OTA
  • 2700mm Focal Length, f/15 Focal Ratio
  • Limited-Diffraction Optical System
  • Anti-Reflection Fully Multi-Coated Glass
$1,27500
Reg. $1,500.00
Holiday Savings $225.00
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
$1,39900
Reg. $1,679.00
Holiday Savings $280.00
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 Advanced VX 9.25" SCT GoTo EQ Telescope

B&H # CEAVX925SCTK MFR # 12046
Key Features
  • 9.25" f/10 OTA
  • StarBright XLT Optical Coating System
  • Motorized Computer-Controlled EQ Mount
  • NexStar+ GoTo Hand Controller
$2,94900
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

Celestron CGEM II 800 8" f/10 Schmidt-Cassegrain GoTo Telescope

B&H # CECGEMII800K MFR # 12010
Key Features
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Internal Focusing Mechanism
  • Motorized Computer-Controlled EQ Mount
$2,99900
In Stock

Celestron CPC 1100 GPS (XLT) 279 mm f/10 Schmidt-Cassegrain GoTo Telescope with Tripod

B&H # CECPC11XLTK MFR # 11075-XLT
Key Features
  • 279mm (11") Schmidt-Cassegrain OTA
  • 2800mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Integrated 16-Channel GPS Receiver
$3,39900
Reg. $3,999.00
Holiday Savings $600.00
In Stock

Celestron CGX Equatorial 800 HD Telescope

B&H # CECGXEQ800TK MFR # 12055
Key Features
  • 8" HD Optics
  • CGX Computerized Equatorial Mount
  • 1.25" 40mm Plossl Eyepiece
  • StarBright XLT Coatings
$4,09900
Special Order
Expected availability: 2-4 weeks

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
$4,29900
Reg. $5,099.00
Holiday Savings $800.00
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
$27000
Reg. $320.00
Holiday Savings $50.00
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
$31500
Reg. $375.00
Holiday Savings $60.00
Temporarily Out of Stock
Expected availability: Dec 08, 2023
Other Buying Options

Explore Scientific FirstLight 100mm f/14 Alt-Az Maksutov-Cassegrain Telescope with Twilight Nano Mount

B&H # EXFLMAK100MC MFR # FL-MC1001400TN
Key Features
  • 100mm Catadioptric OTA
  • 1400mm Focal Length, f/14 Focal Ratio
  • Fully Multi-Coated Optics
  • Internal Focusing Mechanism
$37999
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
$43756
Temporarily Out of 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
$46500
Reg. $550.00
Holiday Savings $85.00
In Stock

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
$47904
In Stock

Explore Scientific FirstLight 127mm f/15 Maksutov-Cassegrain Telescope (OTA Only)

B&H # EXFLMC12719 MFR # FL-MC1271900
Key Features
  • 127mm Catadioptric OTA
  • 1900mm Focal Length, f/15 Focal Ratio
  • Fully Multi-Coated Optics
  • Internal Focusing Mechanism
$47999
In Stock
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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.