Sky-Watcher Skymax 102 AZ-GTi 102mm f/13 GoTo Maksutov-Cassegrain Telescope

Sky-Watcher Skymax 102 AZ-GTi 102mm f/13 GoTo Maksutov-Cassegrain Telescope

Sky-Watcher Skymax 102 AZ-GTi 102mm f/13 GoTo Maksutov-Cassegrain Telescope

B&H # SKS21120 MFR # S21120
In Stock
Order in the next 0:00:00 to ship today

Product Highlights

  • 102mm Aperture Maksutov-Cassegrain OTA
  • 1300mm Focal Length, f/13 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
Show moreShow less

Options: OTA, GoTo Mount, Tripod

OTA Only OTA, GoTo Mount, Tripod

Aperture: 102mm, f/13

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

B&H $500 Gift Card Dash

Share for a chance to win a $500 B&H Gift Card!

Share on Twitter

Share a favorite product for chances to win one of eight $500 B&H Gift Cards!
1 new winner announced every Monday starting Nov 5th!
Limit 1 entry per day: Come back every day to increase your chance of winning.

Be sure to mention #BHWishList when you share!

Congrats to our winners so far:

Next winner: Nov 26th

James Z. (Wk 1)

Ralph H. (Wk 2)

Arturo M. (Wk 3)

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $500.00 Gift Card Dash (the "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about October 28, 2018 until on or about December 23, 2018 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share any product found on the B&H website (the "Website") on Facebook or Twitter via the dedicated links contained on the website using the hashtag #BHWishlist; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment ) (optional) to: B&H $500.00 Gift Card Dash Sweepstakes, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total eight (8) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $500.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize at the email address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the email account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An email account holder shall mean the natural person assigned to such email account by the internet access or online service provider or other organization responsible for assigning email addresses for the domain associated with such email account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $500.00 Gift Card Dash Sweepstakes Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $500.00 Gift Card Dash Sweepstakes, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0 VA Sales Tax Collected on This Item
Add to Wish List Item in Wish List

Sky-Watcher Skymax overview

  • 1Description

Combining portability with connectivity, the Sky-Watcher Skymax 102 AZ-GTi 102mm f/13 GoTo Maksutov-Cassegrain Telescope gives users an easy-to-use observational platform for viewing the Moon, planets, and brighter deep-sky objects right out of the box.

The compact 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 52x and 130x 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.

  • 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 mirrorlimiting 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 
    • 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.

    • 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
In the Box
Bundle Items
  • 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
Table of Contents
  • 1Description
  • 102mm f/13 Maksutov-Cassegrain Telescope (OTA Only)
    Optical Tube Assembly
    Optical Design Maksutov Cassegrain
    Aperture 102 mm / 4"
    Focal Length 1300 mm
    Focal Ratio f/12.7
    Eyepiece Barrel Diameter 1.25"
    Diagonal Yes, 90 Star
    Finderscope Yes
    Mounting System Vixen Style
    Weight 4.6 lb / 2.1 kg
    Packaging Info
    Box Dimensions (LxWxH) 23.0 x 10.0 x 10.0"
  • AZ-GTi GoTo AZ Mount
    Mount Type Motorized alt-azimuth
    Load Capacity 11 lb / 5.0 kg
    Motor Dual axis with digital encoders
    GoTo Capability Yes
    Altitude / Latitude Adjustment Not specified by manufacturer
    Polar Axis Scope None
    Includes Tripod/Pier Aluminum, adjustable height
    Max height: 43.3" / 110.0 cm
    Max leg spread: 42.3" / 107.4 cm
    Pier extension
    Power Source 8 x AA batteries or 12VDC power cord
    Dimensions 5.9 x 3.5" / 15.1 x 9.0 cm
    Weight Mount: 2.9 lb / 1.3 kg
    Tripod: 4.2 lb / 1.9 kg
    Pier extension: 1.1 lb / 0.5 kg
    Packaging Info
    Box Dimensions (LxWxH) 45.0 x 10.0 x 9.0"

Sky-Watcher Skymax reviews

Be the first to review this item

Sky-Watcher Skymax Q&A

Sky-Watcher Skymax accessories

See any errors on this page? Let us know.