Orion Store
Shopping Cart
0 item(s)

Availability Details

{"closeOnBackgroundClick":true,"bindings":{"bind0":{"fn":"function(){$.fnProxy(arguments,\'#headerOverlay\',OverlayWidget.show,\'OverlayWidget.show\');}","type":"quicklookselected","element":".ql-thumbnail .Quicklook .trigger"}},"effectOnShowSpeed":"1200","dragByBody":false,"dragByHandle":true,"effectOnHide":"fade","effectOnShow":"fade","cssSelector":"ql-thumbnail","effectOnHideSpeed":"1200","allowOffScreenOverlay":false,"effectOnShowOptions":"{}","effectOnHideOptions":"{}","widgetClass":"OverlayWidget","captureClicks":true,"onScreenPadding":10}

 13 of 139 
Orion Telescopes
Orion ShortTube 80 Refractor Telescope Optical Tube Assembly
€ 140.34
Accepted Payment
Expected Ship Date: 15/09/2020

  • An ideal refractor telescope optical tube assembly for use as a guide scope with a CCD autoguider, or for wide-field observations
  • Fast, wide field-of-view optics excel at guide star acquisition and viewing expansive celestial objects
  • Fully multi-coated 80mm aperture f/5.0 optics deliver bright, wide-field images with sharp resolution
  • Weighs just 2.95 lbs. and measures 15" long - can easily be added to an astrophotography system without overloading your telescope mount
  • Sold as optical tube assembly only without accessories - accessories sold separately

Learn more
Item #  09948e

Here's an optical tube assembly (OTA) version our ever-popular Orion ShortTube 80 refractor telescope. 

The ShortTube 80 Refractor Telescope Optical Tube Assembly is ideal for use as a dedicated guide scope for guided astrophotography pursuits. The fast f/5.0 optical tube provides an expansive wide field-of-view which makes guide star acquisition a breeze. A featherweight contender weighing in at a mere 2.95 lbs., the ST80 OTA can easily be added to virtually any astrophotography set-up without exceeding your imaging-capable equatorial (EQ) mount's payload capacity.

The ShortTube 80 refractor OTA can also perform as a great compact wide-field visual telescope for perusing large swaths of the night sky. Equip with tube rings (sold separately) and pop the telescope onto your favorite Orion telescope mount and you?ve got one nifty, portable rich-field star probe.

You'll love its bright, wide-field views. Its fully multi-coated 80mm objective lens and 400mm focal length (f/5.0) are perfect for scanning vast expanses of night sky. Add your favorite telescope eyepieces, correct-image or mirror diagonal, and finder scope or reflex sight (all sold separately) and you're ready for daytime or nighttime visual adventures. The Orion ShortTube 80 Refractor Telescope Optical Tube reels in bright deep-sky objects and gets you in tight on solar system targets like Saturn, Jupiter, and the Moon. During daylight hours, the ST80 performs admirably as a terrestrial spotting scope, yielding contrasty views with crystal clarity. Achieve a correctly oriented daytime view by adding a 45 correct-image diagonal (sold separately).

Get the versatile fully multi-coated Orion ShortTube 80 Refractor Telescope Optical Tube Assembly today! Sold as Telescope Optical Tube Assembly, no accessories included.



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
  • User level
  • Optical design
  • Optical diameter
    80 mm
  • Focal length
    400 mm
  • Focal ratio
  • Coatings
    Fully multi-coated
  • Optics type
    Air-spaced doublet
  • Glass material
  • Eyepieces
  • Resolving power
    1,45 arc*sec
  • Lowest useful magnification
    12 x
  • Highest useful magnification
    160 x
  • Highest theoretical magnification
    160 x
  • Limiting stellar magnitude
  • Optical quality
    Diffraction limited
  • Finder scope
  • Focuser
    1,25" Rack-and-pinion
  • Mount type
    Optical Tube without Mount
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Tube material
  • Length of optical tube
    38,1 cm
  • Weight, optical tube
    1,4 kg
  • Additional included accessories
    Included accessories may vary for 2nds, Substitutions may be made
  • Other features
    Fully multi-coated
  • Warranty
    One year

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.

{"closeOnBackgroundClick":true,"bindings":{"bind1":{"fn":"function(event, startIndex, itemCount, newItems) { QuickLookWidget.assignEvents(newItems); $(\".Quicklook > .trigger\", newItems).bind(\"quicklookselected\", function(event, source, x, y) { OverlayWidget.show(\'#_widget2137322676191\', event, source, x, y); }); }","type":"itemsloaded","element":".PagedDataSetFilmstripLoader > .trigger"},"bind0":{"fn":"function(){$.fnProxy(arguments,\'#_widget2137322676191\',OverlayWidget.show,\'OverlayWidget.show\');}","type":"quicklookselected","element":".Quicklook > .trigger"}},"effectOnShowSpeed":"","dragByBody":false,"dragByHandle":true,"effectOnHide":"fade","effectOnShow":"fade","cssSelector":"ql-category","effectOnHideSpeed":"1200","allowOffScreenOverlay":false,"effectOnShowOptions":"{}","effectOnHideOptions":"{}","widgetClass":"OverlayWidget","captureClicks":true,"onScreenPadding":10}