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 aluminium 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 aluminium adjustable-height tripod. The entire rig assembles and breaks down without the need for tools, so you can set it up easily 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 colour 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 an accessory tray with rapid no-tool set up

Tripod

Adjustable-height

Lightweight and durable 2-section aluminium 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