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iOptron SmartStar E MC90 GoTo Maksutov Cassegrain Telescope

Item# IOPT006

(2 Ratings)

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List Price: $681.00
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  • 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
Details & Dimensions
Guarantee & Returns


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


Astro Blue

Recommended Usage

Viewing the Moon , Viewing the Planets


8 x AA


Alt-Az Mount , GoTo




Red Dot


No (optional)



Good for Astrophotography


Telescopes Series

iOptron SmartStar Maksutov Cassegrain Telescopes

Optical Design

Maksutov Cassegrain



Focal Length


Focal Ratio


Mount Design

Single Form Arm

Battery Included


Eyepiece 1


Highest Useful Magnification


User Level

For the Beginner


1.3 Resolution , 11.7 Limiting Magnitude , 20mm Eyepiece 2

International Shipping


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Customer Reviews


by PowerReviews
iOptron SmartStar E MC90 GoTo Maksutov Cassegrain Telescope

(based on 2 reviews)

Ratings Distribution

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  • 1 Stars



Reviewed by 2 customers

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(1 of 1 customers found this review helpful)


Wanted to like it.

By huckle b

from charlotte, nc

About Me Avid Adventurer

Verified Buyer



    • Difficult To Focus
    • Difficult to Use
    • Poor Lens Quality
    • Unstable

    Best Uses

      Comments about iOptron SmartStar E MC90 GoTo Maksutov Cassegrain Telescope:

      Really wanted to like this but GoTo would not work. Spent 4 days trying to get it to work. Called Ioptron directly to see if I was inputing any incorrect information (which I wasn't) but unit still would not align. SO FRUSTRATING. Decided to try it manually to see quality of optics etc, which were generic at best. Really disappointing. Jupiter was just a hair bigger with the included 10mm lens compared to 25x100 astro-binocs and had 10X worse quality view. Astro-binocs were so much better. Also, 10mm eyepiece with this scope was like looking through a pinhole. Straining eyes so much to see wobbly/jiggly images. Never seemed to focus to get a clear view other then moon and that wasn't even crisp. Yes tried on multiple clear nights. Waste of time. Also a side note, the tripod is really short. Better get a chair if you're still willing to try this piece of garbage. Next I am trying a 10" dob. Hayneedle is great along with great customer service but this scope and included eyepieces are 25 cent gumball machine quality.

      • Was this a gift?:
      • No

      (2 of 9 customers found this review helpful)


      Good tube,and mount too

      By Flashing Star

      from Los Angeles, CA

      About Me Casual/ Recreational


      • Accurate
      • Quality Lenses
      • Strong Construction


        Best Uses

        • Astronomy
        • Travel

        Comments about iOptron SmartStar E MC90 GoTo Maksutov Cassegrain Telescope:

        The MC tube is great! The mount worth what was paid for, but I wish I had the G modle instead the E.

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