Sky-Watcher Skymax 127 AZ-GTi 127mm f/12 GoTo Maksutov-Cassegrain Telescope

Sky-Watcher Skymax 127 AZ-GTi 127mm f/12 GoTo Maksutov-Cassegrain Telescope

Sky-Watcher Skymax 127 AZ-GTi 127mm f/12 GoTo Maksutov-Cassegrain Telescope

B&H # SKS21130 MFR # S21130
More on the Way
Expected availability: 7-14 business days

Product Highlights

  • 127mm Aperture Maksutov-Cassegrain OTA
  • 1500mm Focal Length, f/12 Focal Ratio
  • Limited-Diffraction Optical System
  • Motorized Computer-Controlled AZ Mount
  • Built-In WiFi Module for Remote Control
  • Free Android & iOS SynScan Pro WiFi App
  • 42,900+ Object Database
  • Day/Night-Assisted Alignment Procedures
  • Two 1.25" Eyepieces, 90° Diagonal
  • Aluminum Tripod with Extension Pier
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Options: OTA, GoTo Mount, Tripod

OTA Only OTA, GoTo Mount, Tripod

Aperture: 127mm, f/12

102mm, f/13 127mm, f/12 150mm, f/12

Not available with current selections

180mm, f/15

Not available with current selections

90mm, f/14

Not available with current selections

$0.00 Tax Collected Outside NY and NJ

You Pay: $725.00

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Sky-Watcher Skymax overview

  • 1Description

Combining power, portability, and connectivity, the Sky-Watcher Skymax 127 AZ-GTi 127mm f/12 GoTo Maksutov-Cassegrain Telescope gives users an easy-to-use observational platform for viewing the Moon, planets, and deep-sky objects right out of the box.

The compact and powerful Maksutov-Cassegrain design is combined with a limited-diffraction optical system and fully multi-coated lens surfaces. The Mak design corrects off-axis aberrations like comas and chromatic aberrations, while the limited-diffraction system prevents light from being scattered by defects in the mirrors and corrector plate. These complementary features, plus the anti-reflection coatings, work together to produce crisp and clear views with true-color rendition and improved contrast and resolution.

Guiding the optical tube assembly (OTA) is Sky-Watcher's AZ-GTi GoTo AZ mount. It features an integrated WiFi module that generates its own local network signal to allow wireless control via a smartphone running their free SynScan Pro app for Android and iOS devices. The app is intuitively laid out for easy setup, navigation, and exploration of the sky—even if you've never looked through a telescope before. Packed with over 42,900 objects with daytime and nighttime alignment-assistance procedures, plus advanced features such as periodic error correction, backlash compensation, tours, and DSLR camera control, the SynScan app is a powerful yet easy-to-use way to control the mount.

To give users a complete observation platform, Sky-Watcher includes a sturdy yet lightweight aluminum tripod that comes with an extension pier. The pier adds additional height for easier viewing when the OTA is aimed at or near the zenith. Two eyepieces, which produce 60x and 150x magnifications, give you a comfortable range for viewing near- and deep-sky objects, while a 90° diagonal places your head in a more comfortable and natural viewing position.

Optical Tube Assembly
  • 127mm aperture enables detailed observations of the Moon, plus planetary and deep-sky viewing
  • 1500mm focal length helps to produce a moderate magnification potential and focal ratio
  • Diffraction-limited optical system prevents light from being scattered by defects in the mirrors and corrector plate for maximum clarity, contrast, and resolution
  • Front convex meniscus lens corrects spherical and chromatic aberrations and comas (off-axis aberrations) across the entire field of view
  • Smaller secondary mirror versus Schmidt-Cassegrains reduces obstructions and increases contrast
  • Fully multi-coated optics maximize light transmission to improve brightness, color rendition, sharpness, and contrast
  • Resolution: 0.91 arcsec
  • Internal primary mirror focusing mechanism
  • 1.25" visual back is compatible with the most popular size eyepieces and accessories
Mount & Tripod
  • Motorized alt-azimuth design
  • Integrated WiFi module allows for direct connection to smartphones without the need for routers or Internet connection
  • DC servo motors precisely move the mount on both axes with minimum vibration
  • Dual encoders on each axis maintain alignment, even when mount is moved by hand, allowing the user to move the mount manually across the sky while keeping GoTo functionality
  • Altitude and azimuth clutch knobs enable easy manual movement
  • SNAP port allows optional remote shutter-release cables to be connected to mount for advanced astrophotography
  • Runs on eight user-supplied AA batteries or optional 12 VDC power cord
  • Adjustable-height aluminum-legged tripod
  • Max height: 43.3"
  • Max leg spread: 42.3"
  • Spiked feet provide greater stability on rough, uneven, and soft ground
  • Center tray holds accessories such as eyepieces, filters, phones, and flashlights
  • Extension pier placed between the tripod and mount head adds height for more comfortable viewing without sacrificing stability or increasing vibration when the OTA is pointed at or near the zenith 


SynScan App
  • Free app for Android and iOS devices
  • Align, move, and control mount wirelessly
  • Automatic day, date, time, and location using the device's GPS unit
  • 42,900+ object database, similar to the conventional SynScan hand controller
  • Sky tour shows best deep-sky objects visible at a specific day/date/time
  • Solar, lunar, sidereal tracking rates
  • Slew speeds: 0.5x, 1x, 8x, 16x, 32x, 64x, 128x, 400x, 600x, Max (800x/3.4°/sec)
  • Assisted nighttime and daytime alignment procedures
  • Periodic error correction (PEC) allows user to train out intrinsic tracking errors and save them into the permanent memory to improve GoTo and tracking accuracy over time
  • Backlash compensation eliminates the backlash experienced when gears stop and settle for improved GoTo and slewing accuracy
  • DSLR shutter release and exposure control enable long-exposure, time-lapse, and other advanced astrophotography techniques to be controlled by the app through the SNAP port on mount

Database Details:

  • Solar system, including Moon, Sun, and planets
  • NGC catalog
  • IC catalog
  • Messier catalog
  • Caldwell catalog
  • SAO catalog
  • Named stars
  • Double (binary) stars
  • Variable stars
  • User-defined celestial and terrestrial objects


Included Accessories
  • 1.25"-diameter barrel
  • Accept most 1.25" filters
  • 10mm focal length yields 150x power
  • 25mm eyepiece produces 60x magnification
  • 1.25" snout and holder are compatible with the most popular size drawtubes and accessories
  • 90° angle places the user's head in a comfortable position, especially when the OTA is aimed at or near the zenith
  • Star diagonal configuration corrects the view vertically, but not horizontally
  • Wide unmagnified field of view makes alignment easy and star-hopping navigation fast
  • Simple red dot allows easy centering without covering small or dim objects
  • Includes mounting bracket


UPC: 050234211307
In the Box
Sky-Watcher Skymax 127 AZ-GTi 127mm f/12 GoTo Maksutov-Cassegrain Telescope
  • Red Dot Finder with Bracket
  • 1.25" Star Diagonal
  • 10mm Eyepiece
  • 25mm Eyepiece
  • AZ-GTi GoTo AZ Mount
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Sky-Watcher Skymax specs

    Optical Design Maksutov-Cassegrain
    Aperture 127mm
    Focal Length 1500mm
    Focal Ratio f/11.8
    Eyepiece Barrel Diameter 1.25"
    Diagonal 1.25" star
    Finderscope Red-dot
    Mount Type Motorized alt-azimuth
    GoTo Capability with SynScan Pro app for Android/iOS
    Tripod Aluminum, adjustable height
    Max height: 43.3" / 110.0 cm
    Max leg spread: 42.3" / 107.4 cm
    Pier extension
    WiFi Connectivity Integrated WiFi module
    GPS Module None
    Power Source 8 x AA batteries
    12VDC power cord
    Optical Tube Dimensions Not specified by manufacturer
    Weight OTA: 9.7 lb / 4.4 kg
    Mount: 2.9 lb / 1.3 kg
    Tripod: 4.2 lb / 1.9 kg
    Pier extension: 1.1 lb / 0.5 kg
    Packaging Info
    Package Weight 24.0 lb
    Box Dimensions (LxWxH) 34.0 x 17.0 x 10.25"

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