iOptron SmartStar E MC90 GoTo Maksutov Cassegrain Telescope

Popular GoTo Telescope

Item #IOPT006-1

  • List Price:
  • $599.00
  • Your Price:
  • $458.00
  • You Save:
  • $141.00 USD24% + FREE Shipping
  • GoTo Maksuto Cassegrain telescope
  • Incredible 250x magnification and 1.3 resolution
  • Includes a heavy-duty stainless steel tripod
  • Features the largest LCD screen on the market
  • 5000-object database with 256 user-defined objects
  • 2 eyepieces: 10mm and 20mm
Questions? Let our experts help!
  • Description

    Our iOptron SmartStar™ E-MC90 telescope system is the ideal choice for deep space viewing and astrophotography. This 90mm-diameter Maksutov-Cassegrain Telescope dramatically reduces the chromatic aberration that plagues its Refractor counterparts and has a focal length of 1200mm. This light weight, ultra-compact scope offers a great combination of power and transportability, and brings stargazing to a whole other level.

    Alt-Azimuth Mount– The Cube™

    The SmartStar™-E-MC90 comes with our patented Alt-Azimuth Mount, a.k.a. The Cube™. This compact mount design is probably the most functional and flexible unit on the market. Both axis motors are built into a small single unit which is universally compatible with all telescopes using a dove-tail connection. In addition, there are no “dead spots” – so you can point your telescope to ANYWHERE above the horizon, whereas, other mounts block the telescope tube at certain points of rotation. This mount also comes standard with AC connection. An optional DC adaptor is available so you can plug your telescope motor into your car if you’re camping or at any remote location.

    The most easy to understand controller on the market

    The GoToNovaTM Controller is much easier to use than other similar products. The hand controller is more intuitive with menu categories better organized. It also has a larger LCD screen with more lines of content compared with the competition. Using the easy-to-use hand controller and its large LCD screen, you can easily set up your telescope and select where you want to go.

    More precise speed control for viewing objects

    The control system also allows you to slew the telescope at 5 different drive speeds, keeping the object within the telescope’s viewfinder for as long as you wish.

    Simply a better tripod

    Made of 1-inch heavy-duty stainless steel the SmartStar™ Tripod is sturdy yet elegant, and gives the user unparalleled stability during operation. Solid construction joints keep your mount locked securely. With an all-metal support system your valuable telescope will keep still even on a windy night.

    GoToNovaTM Computerized Control System

    The revolutionary GoToNovaTM computerized control system is by far the most technologically advanced automated tracking system available on the market today. With a database of 5,000 celestial objects, including all of the most famous galaxies, nebulae, star clusters, not to mention the planets, you’ll be able to enjoy star gazing with the simple push of a button.


    • 90mm Maksutov-Cassegrain telescope
    • 1200mm Focal Length
    • Heavy duty stainless steel tripod
    • Alt-Azimuth Mount– The Cube™-- The only mount of its kind for ultimate rotation
    • Includes the GoToNovaTM Controller. The most intuitive controller on the market.
    • 5000 object database plus 256 user-defined objects
    • The largest LCD screen on the market with 4 lines and 21-character Hand Control with backlit LED buttons.
    • Drive motor with 5-speed setting for precise tracking
    • Dual-axis Servomotor
    • Standard-equipment AC connection (Optional DC adaptor available)
    • GPS-compatible with optional GPS Module (#8411)

    Supplier SKU


    Shipping Restrictions

    Ships to most international destinations, APOs, and FPOs.

  • Dimensions & Specifications




    8 x AA

    Battery Included





    Astro Blue

    Eyepiece 1



    Alt-Az Mount


    Red Dot

    Focal Length


    Focal Ratio


    Good for Astrophotography





    No (optional)

    Highest Useful Magnification


    Mount Design

    Single Form Arm

    Objective Lens Size Code


    Optical Design

    Maksutov Cassegrain

    Recommended Usage

    Viewing the Planets
    Viewing the Moon

    Telescopes Series

    iOptron SmartStar Maksutov Cassegrain Telescopes

    User Level

    For the Beginner


    Dowloand the iOptron SmartStar E Series Quick Start Guide
    Download the iOptron SmartStar E Series Manual
  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    This product has a limited 1 year manufacturer's warranty covers against defects is provided. If you have specific questions about this product's warranty please contact iOptron's Customer Service department at 1.866.399.4587.

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

Ask The Experts

Have questions about an item or need advice on selecting the right astronomy gear? Our team of telescope experts is here to help! Avid amateur astronomers themselves, they've tested products in the field and can provide personalized recommendations.

You can reach our Customer Support line at 1-800-303-5873. We're open 8 a.m. to 8 p.m. Central Time, Monday through Friday and 9 a.m. to 4 p.m. on Saturday.

After hours? Drop us an email at We'll get back to you as soon as possible, usually within 1 business day.