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Orion Telescopes
Orion SkyQuest XT4.5 Classic Dobsonian Telescope
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In Stock
  • Compact and lightweight - a perfect Dobsonian reflector telescope for traveling or easy trips to the backyard at home
  • 4.5" aperture and 900mm focal length provide clear views of lunar craters and plains on the Moon, planets, bright nebulas and galaxies
  • Sturdy and portable Dobsonian base and handy navigation knob allow for effortless maneuvering of the reflector optical tube
  • Collects a whopping 260% more light than a typical beginner-level 60mm refractor telescope - which means hundreds more objects will be visible through the Orion SkyQuest XT4.5 Classic Dobsonian
  • Includes two eyepieces (25mm and 10mm focal length Sirius Plossl), 6x26 correct-image finder scope, 1.25" rack and pinion focuser, collimation cap, eyepiece rack, Starry Night astronomy software, and more!

Learn more
Item #  10014

Now everyone with a curiosity for space can explore its wonders to their hearts' content. With an Orion SkyQuest XT4.5 Classic Dobsonian reflector telescope stargazing is easy and fun for the whole family. Its portable size, innovative design, and point-and-view simplicity make it an extremely user-friendly telescope for beginners and intermediate stargazers alike.

The Orion SkyQuest XT4.5 Classic Dobsonian's Newtonian reflector tube assembly features a big 4.5" (114mm) diameter light-gathering mirror housed in an enameled steel tube. This spherical primary mirror pulls in 260% more starlight than the lens of a 60mm refractor (the classic beginner telescope). More light means you can see a lot more celestial objects in greater detail. The 4.5" Classic Dobsonian is a great telescope for surveying the Moon's many craters, valleys, and mountains. It's relatively long focal length and f/8 focal ratio provides well-defined views of Jupiter's cloud band "stripes" and nearby Galilean moons, not to mention Saturn and its awe-inspiring rings. This telescope is not limited to only view objects in our solar system. The SkyQuest XT4.5 Classic Dob is a great telescope to use while star-hopping among the Milky Way's diverse star clusters and nebulas.

Classic Dob Chart

Packed with great features, the Orion SkyQuest XT4.5 Dobsonian Telescope comes complete with an assortment of useful accessories so you'll be ready for stargazing action as soon as you open the box.  

Accurately aim the SkyQuest XT4.5 Dobsonian with the included 6x26 correct-image finder.

Instead of a small 5x finder scope or reflex sight like you get with most beginner scopes, you get a 6x26 correct-image finder scope with the XT4.5 Dobsonian, which makes it easier to accurately aim the telescope at celestial objects of interest. The finder's correct-image view matches naked-eye vision for simple and effective aiming. Sharp crosshairs in the finder makes it easy to center objects in the telescope's field of view.

Explore the cosmos at different magnifications with two included Sirius Plossl eyepieces.

Two fully coated 1.25" Sirius Plossl telescope eyepieces are included with the XT4.5 Dobsonian: a 25mm for wider-field views at 36x power magnification, and a 10mm for getting in close at 91x power. We recommend starting out with the lower-power 25mm eyepiece to see a bigger "window" of night sky, then swap in the 10mm eyepiece for close-up views. Both eyepieces are threaded to accept optional Orion filters which can enhance observations (filters sold separately).

Dial-in celestial details with the smooth adjusting 1.25" rack-and-pinion focuser.

The SkyQuest XT4.5 Classic Dobsonian reflector telescope features a robust, 1.25" rack-and-pinion focuser built to accept any 1.25" Orion eyepiece or accessory. The smooth focus control makes it easy to dial-in fine details when observing objects in the night sky, whether you're looking at a rocky lunar crater or a wispy nebula. The focuser features two knurled thumbscrews to secure inserted 1.25" eyepieces and accessories in-place.

Use the built-in navigation knob to slew the XT4.5 Dob from target to target.

The XT4.5 Dobsonian telescope's enameled steel reflector optical tube boasts a handy "navigation knob" for easy slewing, or re-positioning of the telescope. To aim the XT4.5, or move it from target to target, simply take hold of the navigation knob near the front opening of the reflector tube and gently move the telescope up or down and left or right as desired. Not only does this handy knob make slewing easy, it also helps keep the tube itself nice and cool in temperature for optimal viewing performance.

Orion CorrecTension springs make setup easy and keep the telescope balanced.

Like our other critically acclaimed SkyQuest Classic Dobsonian reflector telescopes, the XT4.5 sports our exclusive Orion CorrecTension Friction Optimization system for superior optical tube balance and motion control. The CorrecTension springs also keep the tube securely fastened to the Dobsonian base, so the whole telescope can be carried as a single unit by the handle installed on the tube. There's no setting up or dismantling needed each time the telescope is used. That's a big plus!

Learn all about the night sky with the included Starry Night Special Edition software.

Explore starry skies anytime - even when it's cloudy! The Orion SkyQuest XT4.5 Classic Dobsonian telescope includes a FREE download insert for a Special Edition of Starry Night astronomy software. With realistic sky simulations and a many useful features including telescope control, the user-friendly Starry Night Special Edition software will help you plan your observations and understand what you see. Requires PC running Windows XP, Vista, 7, 8 or 10. Requires Macintosh running OS X 10.4 or higher.

The Orion SkyQuest XT4.5 Classic Dobsonian telescope has been designed with ease-of-use in mind. It's a true "Dobsonian" telescope, having all the great features and value that make the Dobsonian reflector design so popular. Intuitive up-down, left-right altazimuth maneuverability makes it a cinch for everyone in the family to use the XT4.5 reflector telescope. As with other Orion Classic Dobsonian telescopes, you don't have to worry about lock knobs or other balancing adjustments. The SkyQuest XT4.5's stable Dobsonian base provides sturdy support of the reflector optical tube, and it features non-stick PTFE/Nylon bearing pads so the scope glides smoothly with just a gentle nudge of the navigation knob on the front of the telescope. The Dobsonian base provides far greater stability than the tripods included with most beginner scopes, so your views will always be steady and free of frustrating vibrations and shakes.

The entire SkyQuest XT4.5 Classic Dob telescope weighs just 17.6 lbs. (tube 9 lbs., base 8.6 lbs.), so it's easy for almost anyone in the family to take to your favorite observing site, whether it's just a few steps out the back door, or off in the dark skies of nearby hills.

Don't discourage a budding interest in astronomy with a flimsy department store telescope - get a sophisticated instrument to nourish curiosity instead. The Orion SkyQuest XT4.5 Classic Dobsonian is a real telescope, not a toy. Its high-quality design and simple operation makes it capable of delivering high-resolution images of astronomical objects; which is why Mom, Dad, and the rest of the gang will enjoy using it, too. Hey, the line forms at the eyepiece!

Meets or exceeds all California State Environmental Quality & Safety Regulations (CARB 93120 Phase 2 Compliant).  



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.


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
  • Optical design
  • Optical diameter
  • Focal length
  • Focal ratio
  • Optics type
  • Glass material
    Low thermal expansion borosilicate glass
  • Eyepieces
    Sirius Plossl 25.0mm,10.0mm (1.25")
  • Magnification with included eyepieces
    36x, 91x
  • Resolving power
  • Lowest useful magnification
  • Highest useful magnification
  • Highest theoretical magnification
  • Limiting stellar magnitude
  • Optical quality
    Diffraction limited
  • Finder scope
    6x26 Correct-image
  • Focuser
    1.25" Rack-and-pinion
  • Secondary mirror obstruction
  • Secondary mirror obstruction by diameter
  • Secondary mirror obstruction by area
  • Mirror coatings/over-coatings
    Aluminum & Silicon Dioxide
  • Mount type
  • Astro-imaging capability
    Simple moon shots
  • Computerized compatibility
    Not compatible
  • Bearing material
    PTFE and UHMW bearings
  • Tube material
  • Tripod material
  • Length of optical tube
    35.0 in.
  • Weight, fully assembled
    17.6 lbs.
  • Additional included accessories
    Collimation cap, Eyepiece rack
  • Other features
    CorrecTension system, Navigation knob, Integral carry handle
  • Warranty
    One year

Orion SkyQuest XT4.5 Dobsonian reflector telescope optical tube assembly
25mm Orion Sirius Plossl telescope eyepiece (1.25")
10mm Orion Sirius Plossl telescope eyepiece (1.25")
Orion 6x26 correct-image finder scope
Finder scope bracket with O-ring
Collimation cap
Telescope eyepiece rack
Dust cap
Left panel
Right panel
Front brace
Top  base plate
Ground base plate
Base assembly screws
Trip caps (black)
Plastic telescope feet
Feet attachment wood screws (length 3/4")
Self-adhesive rubber bumper
Large hex-head bolt (length 2")
3/8" washers
3/8" lock nut
Nylon spacer (white)
Spring coils
Pull loops
Nylon spacers
1/4" washers
Phillips-head screws
Starry Night Special Edition astronomy software

Orders received by 1pm Eastern Time for in-stock items ship the same business day. Orders received after 1pm 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
3 Day Delivery: $164.00
2 Day Delivery: $164.00
Next Day Delivery: $213.00

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