Orion Sirius EQ-G GoTo 180mm Maksutov-Cassegrain Telescope

$1,999.99
Article number: 24764
Availability: Order Now!
  • Maksutov-Cassegrain telescope boasting a big 7.1" aperture and 2,700mm focal length (f/15) excels for high-power solar system use
  • An ideal Maksutov-Cassegrain for high magnification study and astrophotography of compact nebulas, star clusters, as well as the Moon and planets
  • The included Sirius EQ-G computerized GoTo equatorial mount provides stability for high-power photography and viewing, and can automatically locate and track over 42,000 objects after a simple alignment process
  • Telescope optical tube measures only 22" long and weighs less than 16 lbs for compact portability and easy storage
  • Includes 9x50 finder scope, 25mm Sirius Plossl 1.25" eyepiece, 90deg 1.25" prism star diagonal, Starry Night astronomy software, and more!

For the most demanding enthusiast, the Orion Sirius EQ-G GoTo 180mm Mak-Cass Telescope sets the standard for high-power performance and compact design. With 7" of aperture and that long focal length Maksutov aficionados love, you'll get tack-sharp views and clearly defined photos with subtle detail and high contrast. And with GoTo motorized computer guidance you can automatically point the telescope to any of over 42,000 objects in the controller's database. Just select an object to view from the user-friendly menus on the hand controller and let GoTo do the rest!

The reason for the outstanding high-power performance is the 180mm (7.1") optical system with its 2,700mm focal length (f/15). With 44% more light grasp than the 150mm Mak, you'll get brighter astro images and better resolution. And the Maksutov-Cassegrain optical design produces larger images with less eyepiece magnification than other telescopes. It's the perfect combination of brightness, contrast, and definition for planets, close double-stars, clusters, and well-defined deep-sky targets. The meniscus lens is fully multicoated for maximum light transmission, further enhancing the bright, well-defined images. No other optical design can deliver such potent optical specifications in a package that measures just 22" long and weighs in just under 16 lbs.

And all that power is so easy to control! GoTo is a simple yet reliable (and very high-tech) way to control your telescope. Two stepper motors on the Sirius mount power the telescope to the object you select at a brisk 3.4° per second, putting it right in your eyepiece's field of view. You will enjoy more productive viewing sessions, seeing way more wonders in a single evening than you ever thought possible. The GoTo system will even take you on a guided sky tour of the best sights each month! Just do an easy initial alignment and you're ready to go!

The visual back accepts 1.25" eyepieces and accessories, and a dovetail bracket on the rear cell accepts any Orion finder scope or EZ Finder. The dovetail rail on the underside of the tube makes it easy to remove the telescope or attach it to the mount for easier setup. Attach an Orion StarShoot Solar System and you'll capture gorgeous high-resolution color images on your PC!

The legendary Sirius EQ-G mount provides a steady base no matter how rugged your viewing conditions are. This substantial mount features internal dual-axis stepper motors that slew the telescope at up to 3.4° per second. Includes an illuminated polar-axis scope, 8.3" dovetail mounting bar, and an 11 lb. counterweight. The tripod is remarkably sturdy with 1.75"- diameter stainless steel legs and metal spreader plate. And, of course, the computerized GoTo controller makes harnessing all that power a snap! Requires an external 12-volt power source or an AC-to-DC adapter.

Power, versatility, portability - if you're a serious big Mak fan then this one is for you!

For owners of the Sirius EQ-G GoTo Mount whose version of the GoTo hand controller is 3.0 or greater, the GoTo hand controller's firmware can be updated over the internet.

 

  • Best for viewing
    Brighter deep sky
     
  • Best for imaging
    Lunar & planetary
     
  • Advanced
     
  • Maksutov-Cassegrain
     
  • 180mm
     
  • Finder scope lens diameter
    50mm
     
  • 2700mm
     
  • f/15.0
     
  • Eyepieces
    Sirius Plossl 25.0mm (1.25")
     
  • Magnification with included eyepieces
    108x
     
  • 0.64arc*sec
     
  • Highest theoretical magnification
    360x
     
  • Diffraction limited
     
  • Finder scope
    9x50
     
  • Focuser
    Internal
     
  • Diagonal degrees
    1.25" 90° Prism Star
     
  • Secondary mirror obstruction
    41mm
     
  • Secondary mirror obstruction by diameter
    23%
     
  • Secondary mirror obstruction by area
    5%
     
  • Mount type
    Equatorial
     
  • Lunar, planetary & long exposure
     
  • Go-To included
     
  • Number of objects in database
    42,000+
     
  • Tracking rates
    Sidereal, Solar and Lunar
     
  • Motor speeds
    3.4°/sec, 64x, 32x, 8x, 4x, 2x, 1.75x, 1.5x, 1.25x
     
  • Motor type
    Microstep driven 1.8°stepper motors
     
  • Bearing material
    Sealed ball bearings
     
  • Power requirement
    12-volt DC - 2A (tip positive)
     
  • Yes
     
  • Sold separately
     
  • Backlash compensation
    Yes
     
  • 20-66
     
  • Setting circles
    Yes
     
  • Polar-axis scope
    Included
     
  • Counterweights
    Two 11 lb.
     
  • RS-232, autoguider
     
  • Tube material
    Aluminum
     
  • Tripod material
    Steel
     
  • Tripod leg diameter
    1.75 in.
     
  • Counterweight bar length
    8 in.
     
  • Diameter of counterweight shaft
    18mm
     
  • 42.00 in. - 55.00 in.
     
  • Length of optical tube
    22.5 in.
     
  • Weight, optical tube
    15.9 lbs.
     
  • Weight, mount/tripod
    32.0 lbs.
     
  • Weight, fully assembled
    62.9 lbs.
     
  • Additional included accessories
    Sirius EQ-G GoTo hand controller
     
  • One year

 

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