User manual
Sky-Watcher Skymax 102 AZ-GTi 102mm f

User Manual for Sky-Watcher Skymax 102 AZ-GTi 102mm f 13 GoTo Maksutov-Cassegrain Telescope

• Product category: Catadioptrics (Cassegrains) Sky-Watcher
• Brand: Sky-Watcher
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Sky-Watcher Catadioptrics (Cassegrains)

Product description

• 102mm f/13 Maksutov-Cassegrain Telescope (OTA Only) Similar to their Schmidt cousins, this 102mm f/13 Maksutov-Cassegrain Telescope from Sky-Watcher exchanges the conventional front corrector plate with a convex meniscus lens, which results in a smaller secondary mirror—limiting obstruction and increasing contrast, while eliminating the need for periodic collimation. The Maksutov optical path results in a slower focal ratio and narrower field of view versus a similar Schmidt, but the optical benefits, when coupled with the larger aperture and fully multi-coated optics, make this an ideal scope for solar, lunar, planetary, and deep-sky observation of bright objects like stars and clusters.The scope is outfitted with a 1.25" visual back and, to get users started, Sky-Watcher includes 10 and 25mm eyepieces that produce low and moderate magnifications and a 90° star diagonal for more comfortable viewing when the optical tube assembly (OTA) is pointed at or near the celestial zenith. The OTA is offered here without a mount or tripod for users who have a platform or want to use it as part of a dual-OTA setup for star parties or observation/imaging rigs. It is outfitted with a Vixen-style dovetail plate for easy attachment onto many mounts. This OTA's compact form factor belies its observation power and resolution and is ideally suited as a grab-and-go option for quick observation sessions or heading out to remote locations.
  Optical Performance
  • • 102mm aperture
    • f/13 focal ratio
    • 1300mm focal length
    • 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: 1.01 arcsec
    • Internal primary mirror focus
    • 1.25"-diameter visual back takes 1.25” eyepieces and accessories
  Mounting
  • • Requires user-supplied mount and tripod
    • Vixen-style dovetail plate
    • Weight: 4.6 pounds including OTA, dovetail plate, finder, diagonal, and eyepiece
  Included Accessories
  • • Eyepieces:
    • 1.25" barrel diameter
    • Accept most 1.25" astronomical filters
    • 25mm eyepiece yields 52x power
    • 10mm eyepiece produces 130x magnification
    • Diagonal:
    • 1.25" snout and eyepiece holder
    • 90° angle places head in a comfortable viewing position
    • Star configuration corrects image horizontally for terrestrial use
    • Finderscope:
    • Unmagnified view provides a wide field of view for easier alignment and faster star-hopping navigation
    • Red center aiming dot won't obstruct objects
    • Variable intensity to preserve night-adjusted vision
  UPC: 050234115100
• AZ-GTi GoTo AZ Mount Ideal for small- to medium-aperture refractors and catadioptrics, the Sky-Watcher AZ-GTi GoTo AZ Mount 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 (PEC), backlash compensation, tours, and DSLR camera control, the SynScan app is a powerful yet easy-to-use way to control the mount.Dual-axis motors slew to and track objects, while dual encoders on each axis precisely follow the mount's movement and maintain its alignment—even if the mount is moved by hand. A Vixen-style dovetail saddle makes mounting a variety of optical tube assemblies (OTAs) fast and easy, and with a payload capacity of up to 11 pounds it is ideal for refractors and Maksutov-Cassegrain telescopes. Supporting the mount is an adjustable-height aluminum tripod. The AZ-GTi comes with a pier extension that is located between the tripod and mount head to provide additional height for easier viewing without sacrificing stability when the OTA is aimed at or near the zenith.
  Mount
  • • 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, letting you 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
  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
  Tripod and Extension Pier
  • • 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
  UPC: 050234211109

• 90° Star Diagonal, 1.25" Barrel

• 25mm Eyepiece, 1.25" Barrel

• 10mm Eyepiece, 1.25" Barrel

• Red Dot Finderscope

• Limited 2-Year Warranty

• Pier Extension

• Tripod with Tray

• Limited 2-Year Warranty

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Technical parameters

• 102mm f/13 Maksutov-Cassegrain Telescope (OTA Only)

  Optical Design	Maksutov Cassegrain
  Aperture	102 mm / 4"
  Focal Length	1300 mm
  Focal Ratio	f/12.7
  Focuser	Internal
  Eyepiece Barrel Diameter	1.25"
  Diagonal	90 Rating 100% users recommend this product to others. And what about you? This product has already been rated by 81 owners. Add your rating and experience with the product. Discussion Ask our technicians if you have a problem with your settings, or if anything is unclear in the user manual you have downloaded. You can make use of our moderated discussion. The discussion is public and helps other users of our website who may be encountering similar problems. The discussion is empty - enter the first post Post a new topic / query / comment: Items marked with * are required. Your name *: E-mail : Subject *: Message *: Your email address will not be displayed. Do not forget to fill it in if you want to receive a reply to your enquiry/contribution. Processing of personal data in accordance with GDPR