GSO 1.25" Plossl Eyepiece - 20mm

Our Price: $33.00
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In Stock (10+ Available)
Ships by Next Business Day
Our Product ID: E-GS-GSP20
Manufacturer SKU: GSP20
Item Can Ship: Worldwide
GSO 1.25" Plossl Eyepiece - 20mm

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  • GSO 1.25" Plossl Eyepiece - 20mm

Quick Overview

  • 1.25 inch 20mm plossl eyepiece, 52 degree apparent field of view
  • Fully multi-coated lenses, 4 lens elements, Blackened lens edges
  • 20mm eye relief, fold-down rubber eyeguard
  • Threaded for standard 1.25" astronomy filters
  • Weight 3.5oz., Made in Taiwan

Product Details

GSO's Super-Plossl eyepieces have been some of our most popular sellers over the years. Users will experience incredible views without breaking the bank or impinging on your telescope's balance. They represent what is perhaps the best buy today for astronomers on a budget or for beginners. But don't be fooled by their low prices - these might well turn out to be all the eyepieces you will ever need!

The GSO Super-Plossls are available in a 1.25" barrel size and 9 different focal lengths ranging from 4mm to 40mm. The 4mm, 6mm and 9mm models are great for high power planetary and lunar observation.  The 12mm and 15mm are perfect intermediate focal lengths, performing well on both deep-sky and planetary subjects.  The 20mm and 25mm models would be excellent choices for low power scanning of open star clusters and viewing larger galaxies. The 32mm and 40mm models offer a wide field and are superb for wide field scanning, detailed observations of large diffuse subjects or as a finder eyepiece.

- All eyepieces are fully multicoated (FMC) for maximum light transmission
- High quality lenses provide the best-possible sharpness all over the field of view
- Blackened lens edges reduce light scattering and improve contrast
- Fold-down rubber eyecups to keep out stray light
- Comfortable eye relief at all but the shortest focal lengths (As in all Plossl eyepieces, eye relief can get tight at the shorter focal lengths but this is design constraint, not a fault of these eyepieces)
- Includes two end caps

Eyepiece Series Super-Plossl
Focal Length 20mm
Barrel Size 1.25" (31.7mm)
Apparent Field of View (Mfg Specified) 52°
Eye Relief (Designed) 20mm
Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
Coatings Fully Multi-Coated
Lens Elements 4
Blackened Lens Edges Yes
Barrel Type Smooth sided
Protective Plastic Storage Container Yes - Free Agena Eyepiece Container
Protective Plastic Storage Container Size Agena 42x80mm
Optical Design Plossl
Height (With Eyeguard Extended) 70mm
End Caps 2
Rubber Eye Guard Yes
Weight 3.5 oz

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