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Orion StarSeeker IV 102mm Mak-Cass Telescopes
$549.99 - $649.99
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  • This 4" diameter GoTo Mak-Cass boasts a long 1300mm focal length for sharp and detailed high-power views of the Moon, planets, and brighter deep-sky objects
  • Available in three different options: 1) without hand controller, for wireless control using your smartphone, 2) with pushbutton hand controller, or 3) value-packed kit with hand controller and additional accessories
  • The mount is now Wi-Fi enabled to allow wireless control from any iOS or Android smartphone or tablet using the FREE SynScan Pro app
  • Select any of thousands of objects in the StarSeeker IV's database and the telescope will automatically locate and track them so you can relax and enjoy the view
  • All options come with 23mm (57x) and 10mm (130x) wide-field 60-degree eyepieces, EZ Finder II reflex sight, star diagonal, Orion MoonMap 260, and DeepMap 600 star chart. Value-packed Kit includes even more!

The easily portable Orion StarSeeker IV 102mm GoTo Mak-Cass Telescope presents a winning combination of motorized object-location technology and great optical performance at an unbelievably low price. This smart GoTo telescope will lead you and your family on a guided tour of the stars on any clear night.

The Orion StarSeeker IV 102mm GoTo Mak-Cass Telescope's compact optical tube houses 4"-aperture Maksutov-Cassegrain mirror and lens optics with a long 1300mm focal length, for super sharp resolution and high magnifications. The entire telescope setup weighs only 18.7 lbs., so you can take it anywhere that the sky beckons.

The Orion StarSeeker IV 102mm GoTo Mak-Cass Telescope is now offered in three different options:

Option 1: Orion StarSeeker IV 102mm GoTo Mak-Cass without Controller
Without the SynScan Hand Controller. With this option you control your telescope wirelessly from your smartphone or tablet using the FREE SynScan Pro app. The SynScan Pro app is available for iOS and Android devices.

Orion StarSeeker IV 102mm GoTo Mak-Cass Telescope       Plus Orion DeepMap 600 Folding Star Chart Plus      Orion MoonMap 260

Option 2: Orion StarSeeker IV 102mm GoTo Mak-Cass with Controller
In addition to wireless control from your smartphone or tablet, includes the SynScan Hand Controller, which has come standard with this telescope for years. It's backlit two-line LCD display and intuitive menus help you locate celestial objects in seconds.

Orion StarSeeker IV 102mm GoTo Mak-Cass Telescope       Plus Orion SynScan V5 GoTo Hand Controller      Plus      Orion DeepMap 600 Folding Star Chart Plus      Orion MoonMap 260

Option 3: Orion StarSeeker IV 102mm GoTo Mak-Cass with Accessory Kit
Value-Added Kit includes everything in Option 2 plus additional accessories to enhance your experience under the stars.

Orion StarSeeker IV 102mm GoTo Mak-Cass Telescope       Plus Orion SynScan V5 GoTo Hand Controller      Plus      Orion DeepMap 600 Folding Star Chart Plus      Orion MoonMap 260      Plus      1.25-inch Orion 13% Transmission Moon Filter      Plus      AC-to-DC Power Adapter

The Orion StarSeeker IV mount is now Wi-Fi enabled, so no matter which configuration you choose, you can control it wirelessly from you smartphone or tablet if you choose to, via the free SynScan Pro app. And both the app and the dedicated SynScan hand controller boast a database of over 10,000 deep-sky objects, so you will never run out of fascinating celestial gems to observe and study! Once you select and locate an object from one of the intuitive object menus, the StarSeeker IV GoTo mount's dual servo motors will automatically find the object and track its motion in the sky to keep it in your instrument's field of view. Even a novice stargazer will quickly learn how to explore the heavens with this high-tech telescope in just a couple of sessions. One really cool feature: the "Tour" mode identifies the best objects visible at the time you're observing and will lead you right to them!

The Orion StarSeeker IV GoTo Telescope setup includes an array of terrific accessories as standard equipment: 23mm (57x) and 10mm (130x) wide-field 60-degree eyepieces, EZ Finder II reflex sight, 1.25" mirror star diagonal, Orion MoonMap 260, and Orion DeepMap 600 star chart. The Value-Added Kit (Option 3) builds on that excellent accessory set by adding a Moon Filter, which cuts lunar glare for more comfortable viewing of its cratered surface, and an AC-to-DC adapter for powering the mount if you have access to a 110-volt wall outlet.

  • Best for viewing
    Lunar & bright deep sky
  • Best for imaging
    Lunar, planetary & terrestrial
  • User level
    Beginner
  • Optical design
    Maksutov-Cassegrain
  • Optical diameter
    102mm
  • Focal length
    1300mm
  • Focal ratio
    f/12.7
  • Optics type
    4-element Petzval style
  • Eyepieces
    3-Element 23.0mm,10.0mm (1.25")
  • Magnification with included eyepieces
    57x, 130x
  • Resolving power
    1.13arc*sec
  • Lowest useful magnification
    15x
  • Highest useful magnification
    204x
  • Highest theoretical magnification
    204x
  • Limiting stellar magnitude
    12.7
  • Optical quality
    Diffraction limited
  • Finder scope
    EZ Finder II
  • Focuser
    Internal
  • Diagonal degrees
    1.25" 90° Mirror Star
  • Secondary mirror obstruction
    31mm
  • Secondary mirror obstruction by diameter
    34%
  • Secondary mirror obstruction by area
    12%
  • Mount type
    Altazimuth
  • Astro-imaging capability
    Lunar, planetary & terrestrial
  • Computerized compatibility
    Go-To system
  • Alignment procedure
    Two-Star Alignment
  • Tracking rates
    Sidereal, Solar and Lunar
  • Motor speeds
    Ten different slewing speeds from 0.5x sidereal to over 600x sidereal
  • Motor type
    DC Servo motors with encoders
  • Power requirement
    8-AA batteries or 12-volt DC
  • Available ports
    RS-232
  • Tube material
    Aluminum
  • Tripod material
    Steel
  • Tripod leg diameter
    1.25 in.
  • Length of optical tube
    12.4 in.
  • Weight, optical tube
    4.7 lbs.
  • Weight, mount/tripod
    14.0 lbs.
  • Weight, fully assembled
    18.7 lbs.
  • Warranty
    One year