Take a guided tour of the cosmos without leaving the comfort of your own backyard!
The self-pointing Orion StarSeeker III 102mm GoTo Maksutov-Cassegrain Telescope will show you and your family interesting celestial sights on any clear night. With a long 1300mm focal length and substantial f/12.7 focal ratio, this 102mm (4") aperture StarSeeker III Mak-Cass excels at high-power views of the Moon and planets. Larger in aperture than its 90mm counterpart, the StarSeeker 102mm will display brighter views of celestial targets and allow you to see more details of the objects in its large GoTo database.
An excellent choice for intrepid beginning amateur astronomers, the user-friendly, fully computerized StarSeeker III 102mm GoTo telescope provides electronic, motorized navigation to all the finest celestial objects. StarSeeker III models boast an upgraded computerized database of over 42,000 celestial objects to explore. Once the GoTo system locates a selected object, the StarSeeker III 102mm Mak-Cass will precisely track it as it appears to move across the night sky, so you can enjoy the view for as long as you like before selecting a different target. This allows you to relax and enjoy the view instead of fumbling with cables and buttons to keep the object centered.
With an assembled weight of just 13.4 lbs, it's easy to transport and setup the portable StarSeeker III 102mm GoTo Maksutov-Cassegrain. This smart scope packs a big performance punch in its small telescope tube. Maksutov-Cassegrain telescopes employ both mirrors and lenses to "fold" the light path, which keeps them conveniently compact in size, but with the high magnifying abilities of much longer refractor or reflector models. This gives the StarSeeker III 102mm Mak-Cass a winning combination of easy portability and powerful optics. What's more, the included single-arm GoTo altazimuth mount can be set-up and taken down quickly, and features a quick-release dovetail saddle for swift telescope attachment without the need for tools.
Following an easy two-star alignment process, the StarSeeker III 102mm GoTo can take you on a guided tour of the best visible objects in the night sky. Once aligned, this smart telescope will find and aim itself at any visible planet or Messier, NGC, or IC catalog object in seconds with just a few button pushes. Built-in encoders and servo motors slew the telescope accurately and automatically right to the object you select from the GoTo hand controller's intuitive menus. With a vast database of over 42,000 celestial objects, the StarSeeker III 102mm GoTo Mak-Cass will show you interesting sights on any clear night.
Since the StarSeeker III 102mm Mak-Cass can locate and track celestial objects with its motorized GoTo system, you can use it along with a camera or smartphone to take impressive pictures of the night sky. Capture stunning snapshots of the Moon, planets and more by attaching a dedicated astrophotography camera, or a combination of an Orion SteadyPix accessory and your own point-and-shoot camera or smartphone to the StarSeeker III 102mm Mak-Cass to explore the rewarding hobby of astrophotography. (Cameras and SteadyPix accessories sold separately.)
You'll get a great assortment of useful accessories with the StarSeeker III 102mm GoTo Maksutov-Cassegrain telescope:
Two 1.25" eyepieces are included with the StarSeeker 102mm GoTo Mak-Cass.
The included 25mm Explorer II eyepiece provides 52x magnification in the 102mm Maksutov-Cassegrain optical tube, and the 10mm yields 130x for higher-power looks through the telescope. We recommend starting with the 25mm eyepiece every night to observe a wider area of the night sky, then boost magnification by swapping out the 25mm eyepiece with the 10mm ocular once you have an object centered.
Use the included 90° star diagonal to view the night sky comfortably.
A diagonal "bends" the light path of a telescope so you can enjoy the view without having to contort yourself into awkward positions to peer into the eyepiece. The 90° star diagonal that comes with the StarSeeker 102mm GoTo Mak-Cass places the eyepiece you're using in a comfortable position for nighttime stargazing of the skies above.
The Orion EZ Finder II reflex sight makes it "EZ" to center alignment stars.
Use the included EZ Finder II reflex sight to help center initial alignment stars when performing the two-star alignment required for accurate GoTo performance. It's a non-magnifying sighting device that superimposes a tiny, LED-powered red dot, focused at infinity, on the sky. After a simple alignment procedure, the red dot shows exactly where your telescope is pointed.
Let the computerized GoTo controller guide you on a tour.
The StarSeeker III 102mm GoTo Mak-Cass lets you explore the skies with pushbutton ease thanks to its GoTo hand controller. With a vast database of over 42,000 celestial objects including stars, double stars, galaxies, nebulas, star clusters, and more, the included computerized GoTo hand controller will become your tour guide to the skies.
The StarSeeker III 102mm GoTo Mak-Cass also includes a compass, PC interface cable, and a removable accessory tray for the tripod. Each StarSeeker III requires 8 AA batteries (not included) or an external 12V DC field battery or AC-to-DC wall adapter.
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.
Visit our product support section for instruction manuals and more
Orion StarSeeker III 102mm Mak-Cass OTA
StarSeeker III mount and tripod
GoTo hand controller
Orion EZ Finder II reflex sight
25mm Explorer II telescope eyepiece, 1.25"
10mm Explorer II telescope eyepiece, 1.25"
90-degree star diagonal
Liquid-filled compass to aid in GoTo alignment
PC interface (serial) cable
Hand controller holder
Battery holder for 8 AA batteries (batteries not included)
Starry Night digital download insert
Orders received by noon Pacific Time for in-stock item the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.
A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.
Standard Delivery: $0.00
Standard Delivery to Canada: $20.00
3 Day Delivery: $67.00
2 Day Delivery: $67.00
Next Day Delivery: $80.00