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Orion Telescopes
Intermediate
Orion StarSeeker IV 150mm GoTo Mak-Cass Telescope
Buy This and Receive a FREE Planetary Kit, Moon Map and Tool!
$999.99
3 easy payments of $333.33
With payment plan
 
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In Stock
  • This big, 5.9" diameter GoTo Mak-Cass boasts a super-long 1800mm focal length and f/12 focal ratio to provide exceptional, high-resolution views of the Moon, planets, and deep-sky objects
  • Huge GoTo database of over 42,000 objects, and handy built-in Tour mode means you'll enjoy great views on any clear night
  • Once aligned, dual optical encoders on both axes of motion allow manual aiming of the telescope without losing GoTo alignment
  • After an object is selected, the StarSeeker IV 150mm locates and tracks it automatically so you can relax and enjoy the view
  • Includes GoTo hand controller, 23mm (78x) and 10mm (180x) wide field 60-degree eyepieces, 90-degree diagonal, 2" visual-back, EZ Finder II sight, and more


Learn more
Item #  13166

Reviewed in Sky at Night MagazineOur biggest Maksutov-Cassegrain StarSeeker IV GoTo telescope combines motorized object-location technology with high-power optical performance at a great price. With its computerized database of over 42,000 celestial objects to explore, this smart GoTo telescope will lead you and your family on a guided tour of the stars on any clear night.

Featuring a compact, yet large-aperture Maksutov-Cassegrain optical tube with an extra-long 1800mm focal length and f/12 focal ratio, the StarSeeker IV 150mm Mak-Cass collects a ton of light with its big 5.9" objective lens for bright views. Thanks to its combination of substantial aperture and long focal length, this telescope yields super-sharp resolution at high magnifications, making it an ideal instrument for high-power views of objects in the night sky. You'll be amazed by the exceptional amount of detail this telescope delivers when observing the Moon's cratered surface, and by its ability to reveal subtle features on planets like Jupiter, Saturn and Mars. Deep-sky objects such as nebulas, star clusters, and brighter galaxies are also well within range of this compact power-performer.

Following a simple two-star alignment process, the Orion StarSeeker IV 150mm telescope can guide you to interesting sights on any clear night with its GoTo database of over 42,000 objects. A handy, built-in "Tour" mode feature of the included GoTo hand controller makes it easy for anyone to explore the wonders of starry skies, no matter how familiar or unfamiliar you are with the night sky. Once the StarSeeker IV 150mm GoTo Mak-Cass locates a target for you to explore, the single-arm altazimuth mount's internal motors will automatically track the object's apparent motion and keep it centered so you can enjoy the view as long as you wish.

This fourth generation StarSeeker telescope features dual optical encoders on each axis of motion which allow you to move the telescope tube either manually by hand, or electronically by using the directional arrows on the GoTo hand controller. To save time, battery life, and reduce motor wear, you can manually point the telescope towards the general area of a target object, then engage the tube lock and use the hand controller to let the GoTo mount finish the fine-centering of the object electronically.

This complete GoTo telescope setup includes a thorough assortment of useful accessories:  

Two wide-field 1.25" eyepieces are included with the StarSeeker IV 150mm GoTo Mak-Cass.

The included 23mm wide-field eyepiece provides 78x magnification in the 150mm Maksutov-Cassegrain optical tube, and the 10mm ocular yields a very high-magnification, 180x view through the telescope for close-up inspections of starry skies. Each included eyepiece has a wide, 60 apparent field-of-view to show you more of the target object and its surroundings.

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 1.25" 90 star diagonal that comes with the StarSeeker IV 150mm 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. This non-magnifying sighting device 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 IV 150mm 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 built-in "Tour" mode will show you great sights on any clear night.

This 150mm GoTo Mak-Cass features a big, 2" visual back so you can use optional 2" diagonals and eyepieces if desired (sold separately). A handy 1.25" step-down adapter is included for the 2" visual back to allow easy installation of the included 1.25" accessories.

The StarSeeker IV GoTo mount and its slanted, single-arm altazimuth design provides attached telescopes with 360 of azimuth motion and 90 of altitude motion for horizon-to-zenith pointing. A quick-release narrow dovetail saddle makes telescope attachment nice and easy. The StarSeeker IV 150mm features an upgraded cylindrical leg stainless steel tripod that is much sturdier than previous models and adjusts in height for comfortable use. Tripod stability is further enhanced with the included dual-purpose spreader plate/accessory holder, which keeps the tripod rigid and provides a handy area for stowing idle eyepieces and accessories. The entire telescope setup weighs 26.1 lbs. for convenient transportability.

Since the StarSeeker IV 150mm Maksutov-Cassegrain telescope 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 IV 150mm Mak-Cass to explore the rewarding hobby of astrophotography. (Cameras and SteadyPix accessories sold separately.)

Each StarSeeker IV telescope is powered by 8 internally stored AA batteries (not included). A 12V DC auto-lighter plug is included for use of optional 12V DC field batteries.  

 

Warranty

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.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
  • Best for viewing
    Brighter deep sky
  • Best for imaging
    Lunar & planetary
  • User level
    Intermediate
  • Optical design
    Maksutov-Cassegrain
  • Optical diameter
    150mm
  • Focal length
    1800mm
  • Focal ratio
    f/12.0
  • Eyepieces
    3-Element 23.0mm,10.0mm (1.25")
  • Magnification with included eyepieces
    78x, 180x
  • Resolving power
    0.78arc*sec
  • Lowest useful magnification
    51x
  • Highest useful magnification
    300x
  • Highest theoretical magnification
    300x
  • Limiting stellar magnitude
    13.6
  • Optical quality
    Diffraction limited
  • Finder scope
    EZ Finder II
  • Focuser
    Internal
  • Diagonal degrees
    1.25" 90° Mirror Star
  • Secondary mirror obstruction
    47mm
  • Secondary mirror obstruction by diameter
    31%
  • Secondary mirror obstruction by area
    10%
  • Mount type
    Altazimuth
  • Astro-imaging capability
    Lunar & planetary
  • Computerized compatibility
    Go-To included
  • Alignment procedure
    Two-Star Alignment
  • Number of objects in database
    42,900
  • Tracking rates
    Sidereal, Solar and Lunar
  • Motor speeds
    Ten different slewing speeds from 0.5x sidereal to over 600x sidereal
  • Power requirement
    8-AA batteries or 12-volt DC
  • Tube material
    Aluminum
  • Tripod material
    Steel
  • Tripod leg diameter
    1.25 in.
  • Length of optical tube
    17.7 in.
  • Weight, optical tube
    12.1 lbs.
  • Weight, fully assembled
    26.1 lbs.
  • Additional included accessories
    2" visual back accepts 2" or 1.25" accessories, Front dust cover, Dovetail mounting rail
  • Other features
    Dual encoders on each axis allow manual GoTo, INternet upgradeable hand controller, Internal battery compartment
  • Warranty
    One year

Orders received by 1pm Eastern Standard 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: $50.00
3 Day Delivery: $87.00
2 Day Delivery: $87.00
Next Day Delivery: $102.00

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