Independent buying guides for backyard astronomy

Sky-Watcher AZ-GTI Portable Computerized GoTo Alt-Az Mount WiFi Enabled App Controlled S21110 Review (2026)

Updated September 21, 2026 · Research-based review

Our verdict

The Sky-Watcher AZ-GTi suits beginners and grab-and-go observers who want GoTo pointing without a hand controller, steering the mount from a phone or tablet app over WiFi. It handles small refractors and Maks well, but its light payload rules out larger telescopes.

Sky-Watcher AZ-GTI Portable Computerized GoTo Alt-Az Mount WiFi Enabled App Controlled S21110

Sky-Watcher AZ-GTI, model S21110, a portable computerized GoTo alt-az mount that is WiFi enabled and app controlled.

Price range: $ (Budget)

What we liked

  • + WiFi app control turns a phone or tablet into a GoTo hand controller
  • + Very portable mount head is ideal for small refractors and Maks
  • + Can be switched to equatorial mode with firmware for basic imaging

Trade-offs

  • - Relies on a phone app, so battery and connection issues can interrupt sessions
  • - Light payload limits it to small, compact telescopes

What the AZ-GTi is designed to do

The AZ-GTi is a compact, motorized alt-azimuth mount that replaces the usual wired hand controller with built-in WiFi and Sky-Watcher's SynScan Pro app for phones and tablets. Once aligned, it can slew to targets from a database of more than 42,900 objects, making GoTo pointing available on a mount small and light enough to carry in one hand along with its tripod. Sky-Watcher rates the payload capacity at 11 pounds, which comfortably covers small refractors, compact Maksutov-Cassegrains, and DSLR camera rigs, but leaves no real margin for larger schmidt-cassegrains or heavier imaging setups. Freedom Find dual encoders let the mount be moved by hand without losing its GoTo alignment, a genuinely convenient feature for quick repositioning during a casual session.

App control instead of a hand controller

Every alignment, slew, and tracking command runs through the SynScan Pro app over the mount's own WiFi signal, so there is no small hand controller screen to squint at in the dark and no proprietary cable to keep track of. This makes the AZ-GTi approachable for beginners who are already comfortable navigating a phone interface, and it keeps the overall kit lighter since a controller and its cable are not part of the package. The dependency runs the other way too: phone battery level, WiFi range, and app stability directly affect whether the mount responds correctly, and a dead phone or a WiFi hiccup mid-session can stall observing until it is resolved. Anyone who prefers a dedicated, always-on hand controller over a phone-based interface should weigh that tradeoff before buying.

Build, power, and portability

The fully assembled mount weighs about 8.6 pounds including its included tripod and pier extension, making the whole kit easy to carry in one trip from a car to a dark site or a backyard. Power comes from 8 AA batteries or a 12 volt DC supply, giving flexibility between disposable convenience and a rechargeable field battery for longer sessions. The mount can also be switched into an equatorial mode with a firmware update and the right wedge accessory, which opens the door to basic long-exposure astrophotography beyond what a pure alt-az mount supports, though that is a secondary use case rather than the mount's main design intent. Build quality matches its price point and portability goals rather than aiming at the heavier-duty feel of larger equatorial mounts.

Where the payload limit matters

An 11 pound payload capacity is generous for a mount this size and price, but it firmly caps what telescopes make sense on it. Small apochromatic refractors, 90mm to 102mm Maksutov-Cassegrains, and lightweight imaging rigs with a DSLR and short lens are all good matches, while larger Schmidt-Cassegrains, bigger refractors, or telescopes paired with heavier cameras and guide scopes will push past a safe working margin. Buyers upgrading from a basic tripod-mounted telescope should check their scope's weight, including any finder, diagonal, and eyepiece, against that 11 pound ceiling before assuming the AZ-GTi will handle it. This is a mount built around portability and grab-and-go convenience first, with payload capacity kept deliberately modest to support that goal.

Who should buy it

The AZ-GTi is a strong choice for beginners and casual observers who want GoTo convenience in a light, portable package and are comfortable running the mount from a phone app instead of a hand controller. It is well suited to small refractors, compact Maksutov-Cassegrains, and casual DSLR astrophotography, and the Freedom Find encoders add real convenience for quick manual repositioning. Buyers planning to use larger telescopes or serious deep-sky imaging rigs should look at a heavier-duty equatorial mount instead, since 11 pounds of payload leaves little room for growth. Anyone who strongly prefers a dedicated hand controller over app-based control, or who observes in areas with unreliable phone battery access, should also weigh that dependency before choosing this mount over a wired alternative.

Frequently asked questions

How much weight can the AZ-GTi mount hold?

Sky-Watcher rates the payload capacity at 11 pounds, enough for small refractors, compact Maksutov-Cassegrains, and lightweight DSLR astrophotography rigs.

Does the AZ-GTi need a hand controller?

No. It is controlled over WiFi through the SynScan Pro app on a phone or tablet, so no separate hand controller is included or required for normal use.

What powers the AZ-GTi mount?

It runs on 8 AA batteries or a 12 volt DC power supply, giving a choice between disposable batteries and a rechargeable field battery.

Can the AZ-GTi be used for astrophotography?

It can be switched to an equatorial mode with a firmware update and a wedge accessory for basic long-exposure imaging, though its light payload still limits it to small telescopes and camera setups.

Prices change often, so check the current price and availability on Amazon.

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