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THE WIDESCREEN CENTER


Orion ShortTube 80-A Refractor Telescope

Orion ShortTube 80-A Refractor Telescope

Product code: TO645
Manufacturer: Orion US
£229.00

Outfitted for Astronomical Viewing, This Wide- Field Wonder is Easy To Take Anywhere!

  • Upgraded version of our popular ShortTube 80 refractor, configured for astronomical viewing
  • Improved with fully multi-coated optics, big 8x40 finder scope, and now a padded carrying case
  • The 400mm, f/5 achromatic optics deliver wide-field views of deep-sky and solar system objects
  • Includes 1.25" focuser, star diagonal, Expanse eyepieces (20mm, 9mm), tube rings, and dovetail bar
  • One-year limited warranty

The ST80-A (for "Astronomy") is an upgraded version of our ever-popular ShortTube 80. Now improved with fully multi-coated optics and a soft carrying case, the "little scope that could" is better than ever! A fantastic take-anywhere astro scope, you'll love its bright, wide-field views. Its 80mm objective lens and short 400mm (f/5.0) focal length are perfect for scanning the heavens. Its wide field of view makes it ideal for deep sky targets. You'll see dramatic star clusters, wispy nebulas, and expansive galaxies. But it also excels for viewing solar system targets. You'll also monitor the moon's phases and track the motions of the planets with crisp views of Saturn's rings and Jupiter's moons.

Multi-coating on all air-to-glass surfaces ensures maximum light transmission for sharp, accurate image fidelity. Includes an aluminum rack-and-pinion focuser (1.25"), 90° mirror diagonal, large 8x40 finder, tube rings, and two Expanse eyepieces (20mm and 9mm). And the convenient mounting block attaches easily to Orion mounts. It's a great way to get started in astronomy - or add a portable second scope to your astro arsenal.

Specifications:

Optical designRefractor
Optical diameter80mm
Focal length400mm
Focal ratio5.0
Optics typeAir-spaced doublet
Glass materialCrown/Flint
Eyepieces includedExpanse 20.0mm, 9.0mm
Magnification with included eyepieces20x, 44x
Resolving power1.43arc*sec
Lowest useful magnification12x
Highest useful magnification150x
Limiting stellar magnitude11.3
Optical qualityDiffraction Limited
Finder scope8x40
Focuser1.25" Rack-and-pinion
Diagonal1.25" 90-deg Mirror Star
Mount styleOptical Tube without Mount
Astro-imaging capabilityLunar, planetary & long exposure
Tube materialAluminum
Length of optical tube15.0 in.
Weight, optical tube3.8 lbs.
Additional included accessoriesSoft carry case, Tube rings, Dovetail mounting bar
Other featuresNow Fully Multi-Coated



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