Celestron's Astro Fi 90mm f/10 GoTo Refractor Telescope utilizes an integrated antenna to emit a local WiFi signal so you can control the mount via Android and iOS smartphones and tablets running the free SkyPortal app. Optically, the scope sports a 90mm aperture, a long 910mm focal length, and fully coated optics so you can make detailed observations of the Moon, and view planets, comets, and satellites. This complete observation rig includes the optical tube assembly, a motorized mount, an aluminum tripod, two eyepieces, a 90° diagonal, and a red-dot finder.
The OTA is mounted on a single-arm motorized alt-az mount. Guiding the mount is the SkyPortal app. Packed with over 120,000 objects, it is designed to help users get set up and start observing quickly. The app offers alignment aids that automatically find objects in the night sky, build customized guided tours, has 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, so you can set it up easy and start observing sooner.
Optical Performance
- 90mm aperture
- f/10.1 focal ratio
- 910mm focal length
- Refractor optical design
- Anti-reflection fully coated optics increases light transmission, and improves contrast and color rendition
- Resolution: 1.54 arcsec, Rayleigh; 1.29 arcsec, Dawes
Mount and Tripod
- Mount:
- Motorized single-arm alt-az
- Runs on eight user-supplied AA batteries
- Quick release base, OTA, and accessory tray with rapid no-tool set up
- Tripod:
- Adjustable-height
- Lightweight and durable 2-section aluminum legs
- Spiked feet for steady footing in soft ground
Computer Control
- Integrated Wi-Fi antenna:
- Mount generates a local WiFi signal
- Directly connect to tablet or smartphone
- Control mount via free SkyPortal app for Android 4.0 and higher, and iOS 6 or later
- SkyPortal app:
- 120,000+ object database
- Custom Sky Tour of all the best celestial objects to view based on the time, date, and location
- Simulate the night sky up to 100 years in the past, or plan a future observing session
- Night Vision Mode preserves night-adjusted vision
- Multiple Assisted-Alignment choices: SkyAlign, 3-Star, Solar System
- Tracking Rates: Sidereal, solar, and lunar
- Automatic tracking for near and deep sky objects
- Multiple slew speeds, up to 3°/sec maximum
- View hundreds of astronomical photographs and NASA spacecraft images
- Listen to more than four hours of audio narration to learn the history, mythology, and science of astronomy and the night sky
- Database objects:
- Solar System: Moon, Sun, and planets
- Star clusters
- Nebulae
- Galaxies
- Asteroids and comets
- Satellites, including the International Space Station
Included Accessories
- Eyepieces:
- 1.25" barrel diameter
- 25mm produces 36x magnification
- 10mm produces 91x magnification
- Diagonal:
- 90° angle
- Star diagonal vertically corrects image for terrestrial viewing
- Finderscope:
- Unmagnified StarPointer
- Red-dot reticle
- Variable intensity
