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 3 of 23 
Orion Telescopes
Beginner
Orion Observer 80ST 80mm Equatorial Refractor Telescope
$139.99
 
Accepted Payment
In Stock
  • Explore the planets and scan the heavens for bright deep-sky gems with the compact and low-cost Orion ShortTube 80mm refractor telescope
  • An ideal refractor telescope package for the observer on-the-go, the compact Observer 80ST packs a lot of performance into a petite telescope design
  • 80mm f/5.0 rich-field refractor telescope delivers sharp and bright wide-field views of the cosmos - great for exploring the Moon, wide views of bright planets and their closeby moons, star clusters, bright nebulas and galaxies
  • The included EQ-1B equatorial mount and adjustable-height tripod allows smooth slow-motion movement to easily track objects in the sky
  • Includes 90-degree star diagonal, two anti-reflection coated 1.25" Kellner telescope eyepieces, red-dot reflex sight and the Orion MoonMap 260


Learn more
Item #  10273

This short focal length refractor telescope gives wonderfully wide views of the night sky! You do not need a big, bulky telescope to enjoy backyard astronomy. Our potent little Orion Observer 80ST Equatorial Refractor Telescope proves otherwise. Compact and hassle free, it's easy to take outside and set up, and easy to bring in when you're done. In fact, this "small wonder" is so versatile, you can even pop the telescope tube onto a camera tripod for daytime spotting scope adventures.

This versatile telescope's 80mm-aperture objective lens has a short focal length of 400mm (f/5), which makes the Observer 80ST extremely portable and compact. Thanks to the telescope's fast f/5 focal ratio, bright, wide-field views of the stars and deep-space objects are the Observer 80ST's forte!

Tracking celestial objects while viewing them in the Observer 80ST telescope is a cinch with the smooth and stable EQ-1B equatorial mount and tripod. The mount is equipped with dual slow motion controls for easy manual tracking of objects in the night sky.

The Observer 80ST refractor telescope comes with a reflex sight, 90-degree diagonal (1.25"), and anti-reflection coated 10mm and 25mm Kellner 1.25" telescope eyepieces. This pint-sized refractor also includes the useful MoonMap 260 to help you identify interesting lunar features you can see in the telescope. A niftier grab-and-go scope you will not find!

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 800-447-1001.

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
    Lunar & planetary
  • Best for imaging
    Lunar & planetary
  • User level
    Beginner
  • Optical design
    Refractor
  • Optical diameter
    80mm
  • Focal length
    400mm
  • Focal ratio
    f/5.0
  • Coatings
    Coated
  • Optics type
    Air-spaced doublet
  • Glass material
    Crown/Flint
  • Eyepieces
    Kellner 10.0mm,25.0mm (1.25")
  • Magnification with included eyepieces
    40x, 16x
  • Resolving power
    1.45arc*sec
  • Lowest useful magnification
    11x
  • Highest useful magnification
    160x
  • Highest theoretical magnification
    160x
  • Limiting stellar magnitude
    12.2
  • Finder scope
    Reflex sight
  • Focuser
    1.25" Rack-and-pinion
  • Diagonal degrees
    1.25" 90° Mirror Star
  • Mount type
    Equatorial
  • Astro-imaging capability
    Simple moon shots
  • Dovetail bar system
    No
  • Polar-axis scope
    Not available
  • Tube material
    Aluminum
  • Tripod material
    Aluminum
  • Weight, optical tube
    2.0 lbs.
  • Weight, mount/tripod
    6.2 lbs.
  • Weight, fully assembled
    10.0 lbs.
  • Additional included accessories
    Moon Map 260, Counterweight 2 lbs 2.9 oz
  • Warranty
    One year
  • Lithium Battery Weight
    0.10 grams

Orion Observer 80ST 80mm f/5 refractor telescope optical tube
EQ-1B Equatorial mount and tube clamp
Aluminum tripod
Slow-motion control cables (x2)
Accessory tray
Red dot finder scope
25mm Kellner eyepiece, 1.25"
10mm Kellner eyepiece, 1.25"
90-degree star diagonal
Orion MoonMap 260

Orders received by 1pm Eastern Standard 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.

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: $15.00
3 Day Delivery: $30.00
2 Day Delivery: $30.00
Next Day Delivery: $45.00

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