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Orion Short Tube 80-T Refractor
Harga: USD. 310 - including:
ST 80-T OTA, 45 degree prism, 25mm & 10mm Eyepiece, Finder, Soft Padded Case/Bag, Starry Night Software
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Orion ShortTube 80-T Refractor
This popular wide-field refractor is now even better! Take it anywhere for hours of enjoyment.
Multi-coated 80mm lens and short 400mm focal length give you bright and crisp wide-field vistas.
Perfect for stargazing or terrestrial viewing
Includes two eyepieces, cast-aluminum focuser, and correct-image diagonal (1.25").
One-year limited warranty
The popular "little scope that could" is now even better. The wide-field refractor that novices appreciate for its ease of use and big-scope owners value as a take-anywhere second scope now has fully multi-coated optics and comes with its own padded carrying case.
Its 80mm achromatic objective lens, short 400mm focal length (f/5.0), correct-image diagonal (1.25") and 6x26 correct-image finder scope make the ST80-T perfect for casual stargazing or terrestrial viewing. The short focal length means you'll see a beautifully wide field of view. And like all refractors, the unobstructed light path means sharper images with better definition and contrast.
Despite its diminutive size — it's only 15-1/2" long — this telescope delivers the goods. And it's so portable you will be able to take it virtually anywhere.
It comes equipped with a 1.25" cast-aluminum rack-and-pinion focuser and two interchangeable Sirius Plossl eyepieces — 25mm (16x) and 10mm (40x). Easily attaches to Orion equatorial mounts or photo tripods. One-year limited warranty.
Product Specifications:
| Use |
Terrestrial |
| User level |
Level 1 |
| Optical design |
Refractor |
| Optical diameter |
80mm |
| Focal length |
400mm |
| Focal ratio |
5.0 |
| Optics type |
Air-spaced doublet |
| Glass material |
Crown/Flint |
| Eyepieces included |
Sirius Plossl 25.0mm, 10.0mm |
| Magnification with included eyepieces |
16x, 40x |
| Resolving power |
1.43arc*sec |
| Lowest useful magnification |
12x |
| Highest useful magnification |
189x |
| Limiting stellar magnitude |
11.3 |
| Optical quality |
Diffraction Limited |
| Finder scope |
6x26 Correct-image |
| Focuser |
1.25" Rack-and-pinion |
| Diagonal |
1.25" 45-deg Prism Correct-image |
| Mount style |
Optical Tube without Mount |
| Astro-imaging capability |
Lunar, planetary & long exposure |
| Tube material |
Aluminum |
| Length of optical tube |
15.0 in. |
| Weight, optical tube |
3.8 lbs. |
| Additional included accessories |
Soft carry case |
| Other features |
Dovetail mounting bar w/ 1/4"-20 threaded holes, Now Fully Multi-Coated |
| Warranty |
One year |