Objective lens diameter: 70mm
Lens focal length: 500 mm
Eyepiece 1: MA eyepiece 20mm (25 times)
Eyepiece 2:MA Eyepiece 10mm(50 times) Lens sleeve material Aluminum alloy
Eyepiece 3: Aspheric (125 times) eyepiece 4mm
Star Finder : 6X24 Optical Star Finder
Extender:2X Extender
Optical structure: refraction
Coating: multi-layer coating
Bracket: AZ Theodolite
Stand:Stainless Steel Stand
Mirror: 90 Degree Upright Mirror
The difference between monocular/binoculars:
Binoculars are most commonly used for close observations (travel or watching sporting events, etc.)
Monoculars are mostly used for long-distance observation, (such as watching the city on the roof of a building, observing in fields)
Observing the starry sky is an astronomical telescope
1. The binoculars have a wider field of view, and the monocular has a narrow field of view.
2. The principle is different: Binoculars are often assembled by a convex lens and a concave lens to form a light path. Monoculars are often assembled of two convex lenses to form a light path.
3. The single tube is often longer, and the double tube is shorter, which is also determined by the different principles.
4. The first reason is that the binoculars have two lens, so the field of view is wide, and the second reason is that the magnification of binoculars is often lower than that of monocular ones.