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Orion Telescopes
Orion AstroView 120ST Equatorial Refractor Telescope
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  • Wonderful wide-field refractor telescope for viewing deep-sky objects with crisp resolution
  • 120mm (4.7") aperture and 600mm focal length refractor provides sharp views of nebular clouds, star clusters, and galaxies
  • Also capable of achieving pleasing views of the Moon and bright planets
  • Includes sturdy adjustable-height tripod, equatorial mount for manual slow-motion celestial tracking and an internal polar alignment scope for precision performance
  • Includes two Sirius Plossl 1.25" eyepieces (25mm and 10mm), 6x30 finder scope, smooth 2" rack and pinion focuser, and 90-degree mirror star diagonal

Learn more
Item #  09005b

Refractor telescopes have long been touted as great optical instruments for studying the planets and Moon. But with its short focal length and generous 120mm aperture, our popular Orion AstroView 120ST (ST for "Short Tube") Equatorial Refractor Telescope takes refractor usage to new depths - as in deep sky!

This compact, rich-field refractor telescope is designed for wide-field observation of nebular clouds, star clusters, and even distant galaxies. The Orion AstroView 120ST Equatorial Refractor Telescope features multi-coated optics and a well-baffled optical tube to ensure good contrast in your views. The refractor telescope optical tube measures just 26" long including the dew shield, so it earns high marks for portability. Not limited to visual use, the fast f/5 optical system makes the AstroView 120ST an excellent refractor telescope to use for wide-field astrophotography in addition to observational astronomy.  

Large, 120mm objective lens gathers a lot of light for bright wide-field views.

The Orion AstroView 120ST EQ Refractor has a big 120mm (4.7") clear aperture for great light gathering and big, bright views. The 120ST refractor telescope's achromatic objective lens has a short focal length of just 600mm (f/5) for exceptional rich-field performance. With the included 25mm Plossl, the AstroView 120ST refractor covers a sprawling 2.1° swath of sky - enough to display the entire Double Cluster of Perseus, Pleiades Cluster, or North America Nebula!

The included 6x30 finder scope will help you aim the telescope accurately.

The AstroView 120ST comes with a 6x30 finder scope which lets you accurately aim the refractor anywhere in the sky. The finder features a lightweight, yet sturdy aluminum dovetail bracket with easy two-screw adjustment. Once a simple alignment process is completed, just peer through the finder scope and move the telescope until the cross hairs are centered on the object you want to see. Look in the telescope, and there it is!

Explore the night sky at two different magnifications with the included eyepieces.

Two included 1.25" Sirius Plossl telescope eyepieces provide good, sharp views at 24x (with the 25mm focal length eyepiece) and 60x (with the 10mm focal length eyepiece). Each Sirius Plossl boast a wide, 52° apparent field-of-view. We recommend starting out with the 25mm eyepiece for a wider view, then once you've centered an interesting object, take a closer look by swapping out the 25mm ocular for the more powerful 10mm eyepiece to explore in detail.

Use the included 90° star diagonal to view the night sky comfortably.

A 90° 1.25" mirror star diagonal provides a comfortable angle at night and yields bright views. 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 cast-metal 2" rack-and-pinion focuser with included step-down 2"-to-1.25" adapter accommodates either a 1.25" or 2" diagonal, so you can use optional 2" gear for an even dreamier wide-field effect! (2" accessories sold separately.)

The included AstroView EQ mount provides slow-motion control and solid support.

The AstroView equatorial (EQ) mount provides the stability and smoothness of motion you need for enjoyable wanderings through the heavens. An included polar-axis scope will allow you to achieve polar-alignment quickly and accurately, and manual slow-motion controls let you center objects and track them with minimal effort. To upgrade to motorized tracking, you can add an optional Orion EQ-3M electronic drive for automatic tracking of celestial objects (Orion EQ-3M drive sold separately).

The AstroView 120ST EQ refractor telescope also includes a collimation cap and center-marked primary mirror for easy optical alignment.

Weighs 36.5 lbs. total (optical tube 8 lbs., 9 oz.; mount 28 lbs.).


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 800-447-1001.


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
    Deep sky
  • User level
  • Optical design
  • Optical diameter
  • Focal length
  • Focal ratio
  • Coatings
  • Optics type
    Air-spaced doublet
  • Glass material
  • Eyepieces
    Sirius Plossl 25.0mm,10.0mm (1.25")
  • Magnification with included eyepieces
    24x, 60x
  • Resolving power
  • Lowest useful magnification
  • Highest useful magnification
  • Highest theoretical magnification
  • Limiting stellar magnitude
  • Optical quality
    Diffraction Limited
  • Finder scope
  • Focuser
    2" Rack-and-pinion
  • Diagonal degrees
    1.25" 90° Mirror Star
  • Mount type
  • Astro-imaging capability
    Lunar & planetary
  • Dovetail bar system
  • Motor drive compatibility
    Clock drive sold separately
  • Computerized compatibility
    Not compatible
  • Bearing material
    Friction bearings
  • Latitude range
  • Setting circles
  • Polar-axis scope
  • Counterweights
    One 7.5 lb., one 4 lb.
  • Tube material
  • Tripod material
  • Counterweight bar length
    10 in.
  • Diameter of counterweight shaft
  • Height range of mount
    36.00 in. - 56.00 in.
  • Length of optical tube
    24.5 in.
  • Weight, optical tube
    8.6 lbs.
  • Weight, mount/tripod
    16.5 lbs.
  • Weight, fully assembled
    36.3 lbs.
  • Additional included accessories
    Polar alignment scope, 1.25" adapter
  • Other features
    2" Focuser
  • Warranty
    One year

Orion 120mm, f/5 refractor telescope optical tube assembly
25mm Sirius Plössl telescope eyepiece (1.25")
10mm Sirius Plössl telescope eyepiece (1.25")
90º Mirror star diagonal (1.25")
2" - 1.25" telescope eyepiece adapter
Tripod legs
AstroView Equatorial mount
6x30 finder scope
Finder telescope bracket with O-ring
Tube rings
Polar axis finder scope
7.3 lb counterweight
3.8 lb counterweight
Counterweight shaft
Tripod accessory tray
Slow-motion control cables
Dust cap
Polar axis finder scope plastic cover
Accessory tray bracket
Phillips-head screwdriver
Flat-head screwdriver key

Orders received by 1pm Eastern Standard Time for in-stock items ship 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: $40.00
3 Day Delivery: $83.00
2 Day Delivery: $83.00
Next Day Delivery: $96.00

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