Description
Designed for beginners or as a simple grab-and-go option, Celestron‘s NexStar 90 GT 90mm f/10.1 GoTo Refractor Telescope features a utilitarian 90mmm aperture with a long 910mm focal length. This complete observation rig includes the optical tube assembly, the NexStar computer controller, a motorized mount, an aluminum tripod, two eyepieces, a 90° diagonal, and a red-dot finder. The rack-and-pinion focuser accepts the star diagonal that corrects images vertically for terrestrial use. The two eyepieces produce 46x and 228x magnifications to offer users a range of options for observing the Moon, planets, and bright deep sky objects.
The OTA is mounted on a single-arm motorized alt-az mount. Guiding the mount is the NexStar computer hand controller. Packed with over 40,000 objects and flash updateable via the Internet, the NexStar is loaded with features to help users align and find objects in the night sky, including guided tours, automatic tracking rates for near and deep-sky objects, and multiple slew speeds. Supporting the OTA and mount is an aluminum adjustable height tripod. The entire rig assembles and breaks down without the need for tools, letting you set up faster and start observing sooner.
- Optical Performance
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- 90mm aperture
- f/10.1 focal ratio
- 910mm focal length
- Doublet refractor optical design
- Anti-reflection coated optics
- Rack-and-pinion focuser
- Mount
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- Motorized single-arm alt-az
- Runs on eight user-supplied AA batteries
- Quick-release base, OTA, accessory tray with rapid no-tool set up
- Adjustable-height aluminum tripod
- Spiked feet for steady footing in soft ground
- NexStar Controller
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- Pre-loaded 40,000 object database
- Multiple assisted-alignment systems: SkyAlign, Auto 2-Star, Auto 1-Star, 2-Star, Solar System
- Automatic tracking for near and deep sky objects
- Nine slew speeds: 1°/sec, 2°/sec, 3°/sec, 64x, 32x, 16x, 8x, 4x, 2x
- Flash upgradeable operating system
- LED-backlit interface buttons
- RS-232 serial communication port
- Included Accessories
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- Eyepieces:
- 1.25″ barrel diameter
- 4mm = 228x magnification
- 20mm = 46x magnification
- Diagonal:
- 90° angle
- Star diagonal vertically corrects image for terrestrial viewing
- Red-dot finderscope
- Eyepieces:
Optical Design | Refractor |
Aperture | 3.5″ / 90 mm |
Focal Length | 910 mm |
Focal Ratio | f/10.1 |
Eyepiece Barrel Diameter | 1.25″ |
Diagonal | 90° star |
Finderscope | Red-dot finder |
Tripod | Adjustable height, aluminum |
Mount Type | Motorized alt-az |
Power Source | 8 x AA batteries |
Optical Tube Length | 36.0″ / 91.4 cm |
Weight | Not specified by manufacturer |
Packaging Info | |
---|---|
Package Weight | 24.4 lb |
Box Dimensions (LxWxH) | 44.0 x 16.5 x 10.2″ |