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
$1,59900
In Stock
Celestron NexStar 5SE 125mm f/10 Schmidt-Cassegrain GoTo Telescope

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
$93900
In Stock
Other Buying Options

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
Temporarily Out of Stock
Expected availability: 2-4 weeks

Celestron NexStar 6SE 150mm f/10 Schmidt-Cassegrain GoTo Telescope Observation Kit

B&H # CEN6SEB
Key Features
  • 6" NexStar 6SE SCT Telescope
  • 1500mm Focal Length, f/10 Focal Ratio
  • Computerized/Motorized Fork Mount
  • SkyPortal WiFi Module
$1,15900
In Stock

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

B&H # CEN6SE MFR # 11068
Key Features
  • 150mm Schmidt-Cassegrain Telescope
  • 1500mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Single-Fork Motorized GoTo Alt-Az Mount
$1,09900
In Stock

Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain Observation Kit

B&H # CEN8SEB
Key Features
  • 8" NexStar 8 SE SCT Telescope
  • 2032mm Focal Length, f/10 Focal Ratio
  • Computerized/Motorized Fork Mount
  • SkyPortal Wi-Fi Module
$1,79995
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
$32000
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
$58173
In Stock

Sky-Watcher Skymax 127 AZ-GTi 127mm f/12 GoTo Maksutov-Cassegrain Telescope

B&H # SKS21130 MFR # S21130
Key Features
  • 127mm Aperture Maksutov-Cassegrain OTA
  • 1500mm Focal Length, f/12 Focal Ratio
  • Limited-Diffraction Optical System
  • Motorized Computer-Controlled AZ Mount
$88000
In Stock
Other Buying Options

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
$52995
In Stock

iOptron Photron 150mm f/9 Ritchey-Chrétien Catadioptric Telescope (OTA Only)

B&H # IO6111 MFR # 6111
Key Features
  • 150mm Ritchey-Chrétien Catadioptric OTA
  • 1370mm Focal Length, f/9 Focal Ratio
  • Low Thermal-Expansion Quartz Mirrors
  • Dielectric Mirror Coatings
$55800
In Stock

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
$5,09900
In Stock

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

B&H # CENSE6K
Key Features
  • NexStar Evolution 6" SCT Telescope
  • Focal Length: 1500mm, f/10 Focal Ratio
  • Multiple Automatic Alignment Systems
  • Wireless Android/iOS App GoTo Control
$1,80850
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
$49999
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 NexStar 5SE 125mm f/10 Schmidt-Cassegrain GoTo Telescope Observation Kit

B&H # CEN5SEB
Key Features
  • 5" NexStar 5SE SCT Telescope
  • 1250mm Focal Length, f/10 Focal Ratio
  • Computerized/Motorized Fork Mount
  • SkyPortal WiFi Module
$99995
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
$3,19900
In Stock

Celestron C11-A XLT 11" f/10 Schmidt-Cassegrain Telescope (OTA Only, CGE Dovetail)

B&H # CEC11AXLT MFR # 91036-XLT
Key Features
  • 11" Schmidt-Cassegrain OTA
  • 2800mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coatings
  • 40mm Eyepiece, 90° Diagonal
$3,19995
In Stock

Celestron CPC 925 GPS SCT Telescope

B&H # CECPC925XLTK MFR # 11074-XLT
$3,29900
In Stock

Celestron Advanced VX 11" f/10 Schmidt-Cassegrain GoTo EQ Telescope

B&H # CEAVX11SCTK MFR # 12067
Key Features
  • 11" Schmidt-Cassegrain OTA
  • 2800mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coatings
  • Motorized Computer-Controlled EQ Mount
$3,69900
Back-Ordered

Celestron CPC Deluxe 925 HD 9.25" f/10 Cassegrain GoTo AZ Telescope

B&H # CE11008K MFR # 11008
Key Features
  • 2350mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • EdgeHD Aplanatic Field-Flattener Design
  • Motorized GoTo Dual Fork Azimuth Mount
$4,29900
In Stock

Celestron 11" f/2.2 Rowe-Ackermann Schmidt Astrograph v.2 (OTA only)

B&H # CE11ROTAV2 MFR # 91076
Key Features
  • Large 11"-Diameter Aperture
  • 620mm Focal Length/ f/2.2 Focal Ratio
  • StarBright XLT Optical Coating System
  • 4-Element Rare-Earth Optical Glass
$4,39900
Special Order
Expected availability: 7-14 business days

Sky-Watcher 90mm f/14 Maksutov-Cassegrain Telescope (OTA Only)

B&H # SK90MMMCOTA MFR # S11500
Key Features
  • 90mm Aperture Maksutov-Cassegrain OTA
  • 1250mm Focal Length, f/14 Focal Ratio
  • Limited-Diffraction Optical System
  • Fully Multi-Coated Optics
$27000
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
Temporarily Out of Stock

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
Back-Ordered - Special Order
Expected availability: Sep 02, 2022

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
Special Order
Expected availability: 2-4 weeks

Explore Scientific FirstLight 127mm f/15 Alt-Az Maksutov-Cassegrain Telescope with Twilight Nano Mount

B&H # EXFLMAK127TN MFR # FL-MC1271900TN
Key Features
  • 127mm Catadioptric OTA
  • 1900mm Focal Length, f/15 Focal Ratio
  • Fully Multi-Coated Optics
  • Internal Focusing Mechanism
$49999
Temporarily Out of Stock
Expected availability: 2-4 weeks

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

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
$68000
Temporarily Out of Stock

Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope with Observer's Kit

B&H # CEN4SEOAK
Key Features
  • 102mm Maksutov-Cassegrain Telescope
  • 1325mm Focal Length, f/13 Focal Ratio
  • StarBright XLT Optical Coating System
  • 40,000+ Object NexStar+ Hand Controller
$71585
In Stock

YOUR RECENTLY VIEWED ITEMS

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.