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Explore Scientific


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




  • The Explore Scientific iEXOS-100 PMC-Eight? Equatorial Tracker System is a complete astronomical computerized Wifi or wired GOTO system that provides superior performance by pairing a proven German equatorial mount design with the revolutionary PMC-Eight? Precision Motion Control system to flawlessly navigate the night sky and track objects as they journey across it.
  • Description

    The iEXOS-100 PMC-Eight Equatorial Tracker System is a complete astronomical computerized Wifi or wired GOTO system that provides superior performance by pairing a proven German equatorial mount design with Explore Scientific?s revolutionary PMC-Eight? Precision Motion Control system to flawlessly navigate the night sky and track objects as they journey across it. 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.
  • About

    The iEXOS-100 PMC-Eight? Equatorial Tracker System is a complete astronomical computerized Wifi or Wired GOTO Equatorial Tracker with integrated PMC-Eight? electronics that provides superior observing and imaging performance without a prohibitive price tag. It can be used with the free ExploreStars App for Tablets* (Windows, Android, Amazon and Apple), or 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. (Note: Tablet or computer must be purchased separately.)

    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. The PMC-Eight? with its versatile connections supported with free to download apps for Windows, Android, and iOS, or through the free to download ASCOM PMC-Eight? driver and POTH Client to connect to your favorite ASCOM Compliant Astronomical Software, can allow 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.

    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.

    Although it is internally complex, the GOTO system can be easily operated from your own Apple, Android or Windows tablet using the ExploreStars app, which has an intuitive nature that makes it simple and quick to align your 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.

    Our commitment to creating a streamlined GOTO mount is obvious in other design choices. The iEXOS-100 has smooth locking clutches 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 a small polar alignment tunnel that allows users to roughly align their observing setup with Polaris. 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; and glow-in-the-dark markers on certain points of the mount and tripod so you can stay oriented with your setup at night. The mount is designed to hold up to 19 lbs (scope, accessories, and counterweights added together).

    * Note: Tablet or computer must be purchased separately.


    Item Number
    Mount head weight 9.45 lbs
    Tripod height fully collapsed 29.5 inches
    Tripod height open, retracted legs 25 inches
    Tripod height open, legs fully extended 42 inches
    Foot print 42 inches
    Tripod weight 11 lb; 5.0kg
    Mount weight capacity: Approx. 9 lbs (equipment weight only),15 lbs Photographic (equipment and counterweights); Approx. 19 lbs Visual (equipment and counterweights)



    Download ExploreStars Software Here

    Find inserts to your PMC-Eight Questions on our Knowledge Base

    Download the iEXOS-100 Instruction Manual

    iEXOS-100 Azimuth Adjuster Adapter Instruction Manual iEXOS-100 Polar Finder and Adapter Instruction Manual


    Limited Warranty is one year, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when product is registered within 60 days of purchase. Click Here to register

    CA Residents: Prop 65 WARNING(S)

    Order Confirmation:

    As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

    Order Shipment:

    If your order is stock and we process the charges to your credit card, it will ship within five business days from the date of your order.  We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at


    Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrived damaged, please send photos

     and we will process an insurance claim on your behalf.

    Cancellations & Refunds:

     If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges. Refunds will only be issued to the original credit card that you use when placing your order.