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Orion Telescopes

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Beginner
Orion XT4.5 Dobsonian Telescope & Beginner Barlow Kit
$299.99
If purchased separately$356.95
You Save$56.96
 
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In Stock
  • 114mm (4.5") aperture and 900mm focal length Dobsonian telescope provides great views of lunar craters, planets, bright nebulas and galaxies
  • Includes the Orion Beginner Barlow Kit - A great value on two of our most popular items for novice backyard astronomers
  • Included Orion 2x Shorty Barlow Lens doubles the magnification of virtually any 1.25" eyepiece, adding magnification options to your telescope right out of the box
  • The included Beginning Stargazers Toolkit provides plentiful reference material for nighttime observing and a handy red LED light to see them clearly
  • An affordable and value-packed telescope and accessory kit perfect for beginning astronomers!


Learn more
Item #  27192

Our SkyQuest XT4.5 Dobsonian reflector is a quality telescope, with point-and-view simplicity that makes it easy to use and makes stargazing fun! The optical performance is far and away better than flimsy department store models. Its 4.5" (114mm) mirror, housed in an enameled steel tube, gathers 260% more starlight than a 60mm refractor. More light means you can see a lot more celestial objects in greater detail. In a review of low-cost beginner telescopes, Sky and Telescope (12/05) proclaimed the XT4.5 "The best of the bunch - a solid combination of optics and mechanics." Try it and see for yourself!

Classic Dob Chart

This bundle includes the crowd-pleasing Orion XT4.5 Classic Dobsonian and our Orion Beginner Barlow Kit for powerful performance! The included Beginner Barlow Kit is a great combination of accessories for anyone beginning a hobby of amateur astronomy and includes the powerful Orion Shorty 2x Barlow Lens, as well as the useful Orion Beginning Stargazers Toolkit.

A 2-power (2x) Barlow lens is an extremely versatile eyepiece accessory that doubles the magnification of any eyepiece installed. For example, when used with the XT4.5 Classic Dobsonian telescope with its 910mm focal length, using a 10mm eyepiece will yield a view with 91-power magnification. If you installed the same 10mm eyepiece into the Shorty 2x Barlow Lens and used the same XT4.5 Dobsonian telescope, your viewing magnification would be increased to 182-power magnification (91 x 2). Barlows are great eyepiece accessories for beginning astronomers since they allow you to double the power of the eyepieces included with your telescope. They are a great and affordable way to add to your arsenal of viewing magnifications. What's more, the Orion Shorty 2x Barlow gets it's "Shorty" moniker from its compact size compared to other Barlow lenses, so it's easier to find a spot for it when packing your gear for a night under the stars.

With the included Orion Beginning Stargazer's Toolkit, you'll never be "lost in space!" It contains four items designed to help new astronomers find their way around the heavens.

  1. Orion Star Target Planisphere - Dial in your local date and time and it shows you the locations of the constellations and deep-sky objects in the night sky
  2. Discover the Stars - A wonderfully written and illustrated observer's guide
  3. Orion MoonMap 260 - A useful reference map of the Moon's surface that will help the whole family learn the names and locations of more than 260 craters, mountains, valleys, "seas" and other interesting lunar features you can explore with your telescope. Use the MoonMap 260 to identify craters you've observed, or use it before you go out with a telescope to plan a night full of Moon-watching family fun.
  4. Orion RedBeam Mini LED Astro Flashlight - Emits pure red light that won't spoil your night vision. Perfect for reading your planisphere or seeing what you're doing at the telescope

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

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
    Beginner
  • Optical design
    Reflector
  • Optical diameter
    114mm
  • Focal length
    900mm
  • Focal ratio
    f/8.0
  • Optics type
    Spherical
  • Glass material
    Low thermal expansion borosilicate glass
  • Eyepieces
    Sirius Plossl 25.0mm,10.0mm (1.25")
  • Magnification with included eyepieces
    36x, 91x
  • Resolving power
    1.02arc*sec
  • Lowest useful magnification
    17x
  • Highest useful magnification
    228x
  • Highest theoretical magnification
    228x
  • Limiting stellar magnitude
    12.9
  • Optical quality
    Diffraction limited
  • Finder scope
    6x26 Correct-image
  • Focuser
    1.25" Rack-and-pinion
  • Secondary mirror obstruction
    28mm
  • Secondary mirror obstruction by diameter
    24%
  • Secondary mirror obstruction by area
    6%
  • Mirror coatings/over-coatings
    Aluminum & Silicon Dioxide
  • Mount type
    Dobsonian
  • Astro-imaging capability
    Simple moon shots
  • Computerized compatibility
    Not compatible
  • Bearing material
    PTFE and UHMW bearings
  • Tube material
    Steel
  • Tripod material
    Wood
  • 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 feet
Feet attachment wood screws (length 3/4")
Self-adhesive rubber bumper
Large hex-head bolt (length 2")
3/8-inch washers
3/8-inch lock nut
Nylon spacer (white)
T-nut
Spring coils
Pull loops
Nylon spacers
1/4-inch washers
Phillips-head screws
Starry Night special edition software
Orion 1.25" Shorty 2x Barlow Lens
Orion Star Target Planisphere
Discover The Stars book
Orion MoonMap 260
Orion RedBeam Mini LED keychain flashlight

Orders received by noon Pacific 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.

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