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  • 5″ Schmidt-Cassegrain Optical Design
  • StarBright XLT Coatings
  • 25 mm (50x) Eyepiece
  • 45° Erect Image Diagonal
  • 6×30 Erect Image Finderscope
  • Water-Resistant Soft-Sided Case
  • Needs a tripod or astronomical mount in order to use it.

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Celestron’s C5 Spotting Scope

Celestron’s C5 Spotting Scope, featuring a 5″ (127 mm) aperture and 1250 mm f/10 Schmidt-Cassegrain optical system, is known for its optical excellence. This versatile Optical Tube Assembly (OTA), often referred to as an OTA, was even selected by NASA for various space shuttle missions.

The C5 spotting scope serves as the perfect choice for avid bird watchers, nature enthusiasts, and those seeking breathtaking views, whether from the comfort of your home or out in the field. Its lightweight, portable design, weighing just six pounds and measuring 11 inches in length, ensures it’s a convenient visual and photographic instrument suitable for diverse viewing locations. Moreover, Celestron offers a wide range of optional accessories to enhance the capabilities of this remarkable Optical Tube Assembly (OTA).

When paired with an astronomical mount, this telescope transforms into an excellent tool for stargazing, offering high-magnification views in a compact-sized Optical Tube Assembly (OTA).

With a 5″ aperture, the C5 easily outperforms smaller spotting scopes. It boasts 4½ times more light-gathering capability than a 60 mm spotting scope and 2½ times more than an 80 mm scope, making Celestron’s C5 the clear choice when seeking a powerful instrument for delivering brilliant, crisp views.

The C5 spotting scope stands out for its versatility, with a near focus of approximately 20 feet that allows effortless observation of plant life, wildlife, birds, or insects. Simultaneously, the C5 can double as an astronomical telescope. Furthermore, the C5 seamlessly transitions from a high-performance spotting scope to a 1250 mm f/10 telephoto lens.

For photography enthusiasts, the C5 is designed to be fully camera adaptable. Achieving professional-quality shots with the C5 is a breeze; simply attach the appropriate optional T-Adapter and T-Ring for your 35 mm SLR camera to the back of the Optical Tube Assembly (OTA), and you’re ready to capture stunning images. The tripod adapter block on the C5’s tube makes it easy to mount the Optical Tube Assembly (OTA) onto a tripod for both viewing and photography. The C5 comes complete in its own soft-sided carrying case. Please note that to use this telescope, you’ll need either a camera tripod or an astronomical mount, and we can assist you in selecting the correct option.

Weight4.55 kg
Dimensions43 × 36 × 28 cm


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This is an Optical Tube Assembly (OTA) and does not include a telescope mount.

Magnification:50x (with included eyepiece)
Objective Lens Diameter:127mm (5″)
Eyepieces:25mm Plössl (.98″)
Angular Field of View:1° with included eyepiece
Linear Field of View (@1000 yds) / @1000 m):157.5 ft (17.5 m) with included eyepiece
Focal Length:1250mm (49″)
Exit Pupil:2.5mm (0.1″) with included eyepiece
Eye Relief:22mm (0.87″) with included eyepiece
Close Focus:20 ft (6.1 m) with included eyepiece
Twilight Factor:79.7 with included eyepiece
Relative Brightness:6.5 with included eyepiece
Lens Coatings:StarBright XLT
Prism Glass (Type):BaK4
Prism Coatings:N/A
Weight:96 oz (2,722 g)
Environmental Protection:Water Resistant
Nitrogen Filled:No
Tripod Adaptable:Yes
Carrying Case:Black nylon with custom foam protective insert
Camera Adaptable:Yes
Dimensions:330mm x 152mm x 168mm (13.0″ x 6.0″ x 6.6″) without include eyepiece
Included Items:Plössl 25mm eyepiece
45° diagonal
6×30 Erect Image Finderscope
Objective Lens Cover
Eyepiece Lens cap
Firm-sided Custom Fit Case
Solar Warning
  • Never look directly at the Sun with the naked eye or with this optic. Permanent and irreversible eye damage may result.
  • Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
  • Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.
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