refractor astronomical telescope

...​ 80mm Focal Length 800mm(f/11) EQIEquatorial Tripod 135CM Quality Optics: The a...

... , it has a larger diameter (50 mm) and at very best price, do not take up place, suitable for beginners of amateur astronom...

... of the Universe This is a great with bright image quality and high magnification power that suitable for kids and beginners.Th...

... for sky watching for Kids Beginners SPECIFICATION: Premium Quality Optics- CTWR features 70mm ...

Waterproof Wide-view Binoculars 7x50 for Bird Watching with Blue Color Advertising WHERE THEEYE CAN SEE, THE HEARTCAN ALSO REACH OPEN THE WORLD ATA GL...

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

Beginners Telescopes Long Focal Length Astronomical Telescope for Kids Adults Astronomy Parameter: 1) Interchangeable 18X and 60X eyepiece lense 2) Ey...

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

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

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...

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

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

... 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...