astronomical refractor telescope

... 70mm Aperture 300mm for Beginners How to Use 70x300mm Open the tripod. Attach the...

... features 500mm(f/7.1) focal length and 70mm aperture, fully coated optics glass lens with high transmission coatings, provides stunning ...

70mm Adults Beginners Professional Product parameter optical system Model 15-50x70mm Objective 7...

Kids Beginners 70mm HD With Tripod​ Product parameter optical system Model 15-50x70mm Objective 7...

Travel scope Product Description Features: Multilayer coated optics for enhanced brightness, protect your eyes Entry-...

5x18 Finderscope Starter Compact Refractor Telescope 400mm Focal Length F40040mm Astronomical Telescopes Objective diameter 40mm Focus length 400mm Re...

T11.5606 Telescope, Refraction, F360, D60 Type Refraction Lens Clear Aperture 60mm Focal Length 360mm Eyepiece Dia.31.7 H20mm, H6mm Accessories Finder...

Astronomical Used Binoculars 8x20 Pocket Monocular Telescope for School Teaching Sale Advertising WHERE THEEYE CAN SEE, THE HEARTCAN ALSO REACH OPEN T...

A true multi-purpose astronomical telescope. Overall performance: excellent optical design, precision machining, F-7 short focal ratio design, conveni...

... specialized in producing binoculars,rifle scopes, monocular, spotting scope, , optics accessories etc., for more than 15 ye...

Shaft diameter ModelNo. Main dimensions Shoulder height Basic load rating (radial) Mass Inner diameter d Outer diameter D Roller pitch circle diameter...

...surveillance cameras. In the field of precision optics, such as aerospace remote sensing imaging and . In the polishing stag...

... range -30°~+50° 3.5 x 40 Lamp voltage 3V Net weight 1.2kg A nautical sextant is an navigational instrument used by ships to...

... corresponding marker, which can be obtained by look-up table corresponding to each unit of resolution. Its wide range of applications, from aviati...