EON 90mm ED Triplet Carbon Fiber Apo Refractor
Orion
From $1,699.95
2 stores
In stock
The Orion EON 90mm ED Triplet Carbon Fiber Apo Refractor combines premium ED optics with a lightweight, thermally stable carbon fiber tube for high-performance wide-field astrophotography. Its air-spaced triplet lens assembly uses Hoya ED glass for exceptional color correction, while the f/6 focal ratio delivers excellent light-gathering speed for both imaging and visual observation. The dual-speed 2.5-inch rack-and-pinion focuser with 147mm back-focus distance accommodates modern imaging trains, and the compact design easily mounts on mid-sized equatorial or alt-azimuth mounts.
Specifications
| Coatings | Fully multi-coated |
| Back Focus Distance | 147 mm |
| Aperture | 90 mm |
| Focuser Type | 2.5 inch dual-speed hybrid rack-and-pinion |
| Lens Assembly | Air-spaced triplet |
| Weight | 4.4 lb |
| Dovetail Bar Length | 9.6 in |
| Tube Rings | CNC-machined hexagonal |
| Focal length | 540 mm |
| Focuser Travel | 90 mm |
| ED Glass Type | Hoya FCD-100 |
| Fine Focus Control Ratio | 10:1 |
| Focal ratio | f/6 |
| Maximum Payload | 19.5 lb |
| Optical Tube Material | Carbon fiber |