Ask Our Experts800.606.6969
Hello, Log InAccount & Orders
Catadioptric (Cassegrain) Telescopes
105 Items
Filter by:
Sort by:
View:
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
Available in other Styles, Configurations & Kits
$3,99900
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
Available in other Styles, Configurations & Kits
$2,59900
In Stock
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
Available in other Styles, Configurations & Kits
$1,59900
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
Available in other Styles, Configurations & Kits
$1,09900
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
Available in other Styles, Configurations & Kits
$67900
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
$93900
In Stock
Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope with Eyepieces Kit
B&H # CEN8SEEPSK
Key Features
- Single-Fork Motorized GoTo Alt-Az Mount
- 7mm, 12mm & 18mm X-Cel LX Eyepieces
- NexStar+ Computer Hand Controller
- 40,000+ Object Database with Sky Tours
$1,52405
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
Available in other Styles, Configurations & Kits
$1,59900
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
Available in other Styles, Configurations & Kits
$68900
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
Available in other Styles, Configurations & Kits
$1,47900
In Stock
Celestron Origin Intelligent Home Observatory with Nebula Filter & Carry Bag Kit
B&H # CECOIHOFBK
Key Features
- 6"/152mm f/2.2 RASA Optical Tube
- Computerized GoTo Alt-Az Mount
- Displays Imagery on Phone or Device
- Filter Cuts Light Pollution, Darkens Sky
Available in other Styles, Configurations & Kits
$4,33795
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
$40795
In Stock
Sky-Watcher 127mm f/12.1 Maksutov-Cassegrain Telescope (OTA Only)
B&H # SK127MMMCOTA MFR # S11520
Key Features
- 127mm Aperture Maksutov-Cassegrain OTA
- 1500mm Focal Length, f/12.1 Focal Ratio
- Limited-Diffraction Optical System
- Fully Multicoated Optics
Available in other Styles, Configurations & Kits
$55000
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
Available in other Styles, Configurations & Kits
$61999
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
Available in other Styles, Configurations & Kits
$1,06718
In Stock
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
Available in other Styles, Configurations & Kits
$1,79900
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
Available in other Styles, Configurations & Kits
$1,93195
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
$5,09895
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
Available in other Styles, Configurations & Kits
$54599
In Stock
Explore Scientific FirstLight 152mm f/12.5 Maksutov-Cassegrain Telescope (OTA Only)
B&H # EXFLMC15219 MFR # FL-MC1521900
Key Features
- 152mm Catadioptric OTA
- 1900mm Focal Length, f/12.5 Focal Ratio
- Fully Multi-Coated Optics
- Cradle Ring Assembly with Vixen Dovetail
Available in other Styles, Configurations & Kits
$74999
In Stock
Sky-Watcher 150mm f/12 Maksutov-Cassegrain Telescope (OTA Only)
B&H # SK150MMMCOTA MFR # S11530
Key Features
- 150mm Aperture Maksutov-Cassegrain OTA
- 1800mm Focal Length, f/12 Focal Ratio
- Limited-Diffraction Optical System
- Fully Multi-Coated Optics
Available in other Styles, Configurations & Kits
$88000
In Stock
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
Available in other Styles, Configurations & Kits
$1,12693
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
Available in other Styles, Configurations & Kits
$1,24900
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
Available in other Styles, Configurations & Kits
$1,62795
In Stock
Celestron Advanced VX 6" f/10 GoTo EQ Schmidt-Cassegrain Telescope
B&H # CEAVX6SCTK MFR # 12079
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
$1,74900
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
Available in other Styles, Configurations & Kits
$1,89995
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
Available in other Styles, Configurations & Kits
$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
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.