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 65 of 135 
Orion Telescopes
Orion Sirius EQ-G GoTo 180mm Maksutov-Cassegrain Telescope
€ 2,099.99
If purchased separately € 2,467.94
You Save € 367.95
Accepted Payment
Expected Ship Date: 03/03/2021

  • 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!

Learn more
Item #  24764e

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 that 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.

The 180mm (7.1") optical system with its 2,700mm focal length (f/15) provides 44% more light grasp than the 150mm Mak, for brighter astro images and better resolution. It's the perfect combination of brightness, contrast, and high-power definition for planets, close double-stars, clusters, and well-defined deep-sky targets. The meniscus lens is fully multicoated for maximum light transmission. The optical tube measures just 22" long and weighs less than16 lbs.

The SynScan GoTo system employs two stepper motors to power the telescope to the object you select, putting it right in your eyepiece's field of view. The GoTo system will even take you on a guided sky tour of the best objects on any given night!

The optical tube now comes with a 2" visual back and 2"-to-1.25" adapter, so you can use 2" or 1.25" accessories! What's more, the threads on which the 2" visual back attach are SCT (Schmidt-Cassegrain telescope) threads. So you can remove the visual back to thread on an optional SCT-specific diagonal or camera adapter designed for SCT threads. Also included are a 9x50 finder scope, 25mm (108x) Sirius Plossl 1.25" eyepiece, and a 90-degree 1.25" mirror star diagonal.

The Sirius EQ-G mount includes an illuminated polar-axis scope, and two 11-lb. counterweights. The tripod is remarkably sturdy with 1.75"- diameter stainless steel legs and metal spreader plate. Requires external 12-volt power source or AC-to-DC adapter.

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


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 sales-eu@telescope.com

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
  • Optical design
  • Optical diameter
    180 mm
  • Focal length
    2700 mm
  • Focal ratio
  • Eyepieces
    Sirius Plossl 25,0 mm (1,25")
  • Magnification with included eyepieces
    108 x
  • Resolving power
    0,64 arc*sec
  • Lowest useful magnification
    67 x
  • Highest useful magnification
    300 x
  • Highest theoretical magnification
    360 x
  • Limiting stellar magnitude
  • Optical quality
    Diffraction limited
  • Finder scope
  • Focuser
  • Diagonal degrees
    1,25" 90° Prism Star
  • Secondary mirror obstruction
    41 mm
  • Secondary mirror obstruction by diameter
    23 %
  • Secondary mirror obstruction by area
    5 %
  • Mount type
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Dovetail bar system
  • Computerized compatibility
    Go-To included
  • Number of objects in database
  • Tracking rates
    Sidereal, Solar and Lunar
  • Motor type
    DC Servomotors with encoders
  • Bearing material
    Sealed ball bearings
  • Power requirement
    12-volt DC - 2A (tip positive)
  • PEC
  • GPS
    Sold separately
  • Backlash compensation
  • Latitude range
  • Setting circles
  • Polar-axis scope
  • Counterweights
    Two 5kg
  • Available ports
    RS-232, autoguider
  • Tube material
  • Tripod material
  • Tripod leg diameter
    44,45 mm
  • Counterweight bar length
    20 cm
  • Diameter of counterweight shaft
    18 mm
  • Height range of mount
    106,7 cm - 1,40 m
  • Length of optical tube
    57,2 cm
  • Weight, optical tube
    7,2 kg
  • Weight, mount/tripod
    14,5 kg
  • Weight, fully assembled
    28,6 kg
  • Additional included accessories
  • Other features
    Sirius EQ-G GoTo hand controller, , 2" Visual back with 1.25" adapter, SCT threads
  • Warranty
    One year

Orion Sirius 180 EQ-G Maksutoav-Cassegrain GoTo Optical Tube Assembly
25mm Orion Sirius Plössl telescope eyepiece (1.25")
90º prism star diagonal (1.25")
Orion equatorial mount
Computerized hand controller
9x50 finder scope
Tube ring mounting plate
Dovetail finder telescope base
11 lb counterweights
Tripod accessory tray
Dust cap
2" visual back with 1.25" adapter
GoTo hand controller cable for Sirius EQ-G
GoTo hand controller cable for Atlas EQ-G
GoTo hand controller bracket
12V DC Power cable
Starry Night special edition software

Orders received by 5pm UTC for in-stock items 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.

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