Buy one, get one 25% off - Alpen Optics

Explore Scientific  |  SKU: ES-iEXOS100-ET

Explore Scientific iEXOS-100 HD PMC-Eight Equatorial Tracker System

$699.99 $1,199.99

Estimated delivery in 3-5 business days via UPS or FedEx

Ships from US warehouse in 1-2 business days

Shipping & Returns

We offer free US standard shipping on orders over $99 and 30-day returns on most items. Some limitations apply.

Shipping Policy

30-Day Return Policy

Explore Scientific iEXOS-100 HD PMC-Eight Equatorial Tracker System



  • Motorized Computer-Controlled EQ Mount
  • Up to 19 lb Payload Capacity
  • Precision Dual-Axis Micro-Stepper Motor Belt Drives
  • Integrated Wi-Fi and Bluetooth for Wireless Control
  • ExploreStars GoTo App for Windows, Android, Amazon, iOS
  • 70,000+ Object Database
  • Multiple Alignment Processes
  • Vixen-Style Dovetail Saddle
  • Illuminated Polar Finder Scope
  • Azimuth Adjuster Adapter
  • Camera Dovetail Plate
  • 1.5" Adjustable-Height Tripod with Accessory Tray

The iEXOS-100 HD PMC-Eight™ Equatorial Tracker System is a complete astronomical computerized Wifi or Wired GOTO Equatorial Tracker with integrated PMC-Eight™ electronics suitable for attaching Small Telescopes or DSLR Cameras attached to the Explore Scientific DSLR Camera Dovetail Assembly.

In this special bundle package, the iEXOS-100 comes with a selection of accessories designed to further enhance the mount’s performance in imaging situations. The accessories included in this special bundle pack are:

  • Illuminated polar finder scope, which has a reticle with both northern and southern hemisphere markings to ensure an imaging setup will meet the demanding alignment requirements for astrophotography anywhere in the world;
  • Azimuth adjuster adapter, which allows iEXOS-100 users to make fine azimuth adjustments for precise polar alignment;
  • Twilight medium duty tripod, which minimizes vibrations and allows users to add additional weight to the iEXOS-100 mount without compromising performance; and
  • Camera dovetail plate, which makes it easy to attach a camera to the mount.

GOTO systems play an important role in the world of amateur astronomy because they ensure users spend less time searching for particular objects and more time observing and imaging. To operate the PMC-Eight™ system, use the free intuitive ExploreStars App, which is available for Tablets (Windows, Android, Amazon and iOS). Through it, users can quickly align their telescope, navigate the stars and learn specifics about tens of thousands of celestial objects. This dynamic app is fueled by a database that is routinely updated to ensure it remains a relevant resource. Tablet or computer must be purchased separately. Tablet must have a screen of at least 7 inches.

Alternatively, you can operate with the free ASCOM Standards Compliant PMC-Eight™ ASCOM driver and the ASCOM POTH Client from Explore Scientific (either wired or wireless) to work with virtually any sky software that supports ASCOM. This allows you to control the telescope from a few feet away or by communicating computer-to-computer with an Internet connection from virtually anywhere in the world.

The iEXOS-100 utilizes a proven German equatorial mount design and Explore Scientific’s revolutionary PMC-Eight™ Precision Motion Control system to flawlessly navigate the night sky and track objects as they journey across it. This combination provides superior observing and imaging performance without a prohibitive price tag.

One of the standout features of the iEXOS-100 system is its German equatorial design. When it comes to tracking the stars with a telescope, there is nothing that compares to a German Equatorial Mount (GEM) because it will precisely follow objects as they rise in the east and set in the west. For observers, a GEM makes it easy to keep your celestial target in your eyepiece. For imagers, it helps you avoid common astrophotography pitfalls like field rotation.

Before you can track an object, you need to find it, and that objective can be daunting when you’re faced with a vast expanse of inky black sky or a bright city sky. The iEXOS-100 puts a powerful GOTO system in your arsenal of astronomical tools that takes the frustration out of navigating the night sky. This integrated version of Explore Scientific’s PMC-Eight™ system transcends the industry standard single processor by utilizing an 8-core microcontroller with eight CPUs that operate independently of one another to focus on defined functions. This delegation of tasks among the processors results in a system that offers superior responsiveness, efficiency, reliability and astoundingly fast timing intervals for smooth image acquisition and accurate tracking.

Explore Scientific's commitment to creating a streamlined GOTO mount is obvious in other design choices. The iEXOS-100 has smooth locking clutched RA and Declination axes for precise balancing that will let you quickly reposition your telescope from one side to the other and an altitude knob for smooth height adjustments.

The mount base includes an illuminated polar finder scope that lets imagers achieve more precise alignment with the celestial pole and features a reticle with markings for both northern and southern hemispheres and an illuminator with adjustable brightness. It also has a simple bubble level that comes in handy when stabilizing your tripod.

Other features include a bracket for holding the battery pack, which powers the PMC-Eight™ system through 8 C batteries (not included); two 1 kg counterweights for balancing (telescopes and accessories that weigh more than 6 lbs may require additional counterweights); and glow-in-the-dark markers on certain points of the mount and tripod so you can stay oriented with your setup at night.

For visual use, the mount is designed to hold up to 19 lbs (scope, accessories, and counterweights added together). For equipment only, the mount weight capacity is approximately 9 lbs. For photographic use, the capacity is approximately 15 lbs (equipment and counterweights).

The mount weighs 9.45 lbs (4.29 kg), while the Twilight Medium Duty Tripod weighs 11 lbs. The tripod has fully adjustable 1.5-inch stainless legs that are secured with a die cast aluminum spreader tray and threaded T-bar to create a stable foundation to keep vibrations to a minimum and allow users to add additional weight to the iEXOS-100 mount without compromising performance. The tripod offers a height range of 25 to 42 inches and has a broad 42-inch footprint


Recommended Accessories

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Meta Pay
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa

Your payment information is processed securely encrypted during transmission. We do not store credit card details nor have access to your credit card information.

Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question
Explore Scientific iEXOS-100 HD PMC-Eight Equatorial Tracker System | ES-iEXOS100-ET | 811803032873

Explore Scientific iEXOS-100 HD PMC-Eight Equatorial Tracker System

$699.99 $1,199.99





Focal Length


Focal Ratio


Field of View




Barrel Size



29.5" tripod fully collapsed, no mount head

25" tripod open, retracted legs, no mount head

42" tripod open, legs fully extended, no mount head


Mount Head: 9.45 lb , Tripod: 11 lb
View product