Download our latest NYC retail store ad here for our weekly specials!
Orion

Orion 20mm Expanse, 1.25" Eyepiece with 66 Degree Wide Field of View.

SKU: ONE20 MFR: 08923
Due to Manufacturer Restrictions, This Item can NOT be Shipped to California.
Why Adorama?
Easy Returns, Fast Shipping, Trusted for over 35 years.

Need help? Call 800-223-2500 212-741-0052

Our Price

$64.99
Free Shipping
Qty:

Add to Wishlist In Stock

About the Orion 20mm Expanse

The Orion 08923 is a 20mm Expanse Eyepiece with the 66° apparent field of view. Imagine taking in objects like the Andromeda Galaxy, the Double Cluster, or the star clouds in Sagittarius in one sweep. Expanse oculars have big eye lenses and great eye relief (13mm to 17mm). Eyeglass wearers can view the entire field without removing their glasses.

The eyepiece element is fully coated, with the outer lens multi-coated for additional light transmission. Each 1.25" aluminum barrel is threaded for filters and internally blackened to eliminate internal scattering. And their fold-down rubber eyeguards enhance contrast by blocking stray light.

Orion 20mm Expanse Features

  • This 20mm eyepiece offers a wide field of view and superior optical performance at a bargain price
  • Great eye relief so eyeglass wearers can view the entire field without removing their glasses
  • Delivers sharp images with good color correction and contrast
  • Aluminum barrel is internally blackened to eliminate internal light scattering

Orion 20mm Expanse Specifications

Design Ultrawide
Eyepiece focal length 20.0mm
Barrel size 1.25"
Apparent field of view 66.0-deg
Eye relief 18.0mm
Coatings Multi-coated
Number of elements 4
Filter threads Yes
Parfocal No
Field stop diameter 23.5mm
Barrel security recess Yes
Blackened lens edges Yes
Rubber eyeguards Yes
Body material Aluminum
Dimensions 2.3 in. x 1.3 in.
Weight (oz.) 3.81
Warranty Orion 1 year limited warranty
Feedback
Adorama.com is top rated for customer service HACKER SAFE certified sites prevent over 99.9% of hacker crime. BBB Accredited Business