ZenithStar 73
William Optics
From ~$720.58
3 stores
In stock
The William Optics Zenithstar 73 is an apochromatic doublet refractor telescope built for astrophotography, featuring a focal ratio of f/5.9 and focal length of 430mm. This advanced apochromatic refractor is engineered with a premium air-spaced doublet lens that incorporates Ohara FPL-53 ED glass to produce exceptionally clear and vivid images with minimal chromatic aberration. It weighs just 2.9kg (6.4lbs) and measures 315mm with the dew shield retracted, portable enough for travel and small enough for carry-on luggage with most airlines. The scope excels at wide-field deep-sky imaging and is also suitable for visual observation of planets, the Moon, and extended objects.
Specifications
| Optics type | Refractor |
| Aperture | 73 mm |
| Focal length | 430 mm |
| Focal ratio | f/5.9 |
| Highest magnification | 182.5 |
| Weight | 2.9 lb |
| Tube Length | 315 mm |
| Image Circle | 45 mm |
| Limiting Magnitude | 10 |
| Focuser | 10:1 Dual-Speed 2.5 inch Rack and Pinion |
| Objective Type | Air-Spaced Doublet APO with FPL-53 ED Glass |