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refractor telescopes
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What is a "Refractor"?
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telescopes knowledge  A refracting or refractor telescope is a type of optical telescope which refracts light at each end using lenses. This refraction causes parallel light rays to converge at a focal point; while those which were not parallel converge upon a focal plane. This can enable a user to view a distant object as if it were brighter, clearer, and/or larger. These are similar to microscopes. The monocular is a type of refractor. A typical refractor has two lenses, an objective lens and an eyepiece lens. The objective lens has two pieces of glass (with different densities), "crown" and "flint glass". Each side of each piece is ground and polished, and then the two pieces are glued together. The curvatures are designed to cancel chromatic and spherical aberration.
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Telescope Designs
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subject related telelscopes  In general, there are two kinds of telescope systems. One is the Optical Telescope. This is our main manufacturing base. The other is the radio telescope, which is used for National & Scientific research . We manufacture only a few of these.
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Telescope Reviews
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  Telescope reviews from our clients and end users. Please feel free to post your own comments.
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Terrestrial Telescopes
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2.8"inch/70mm terrestrial telescope
Item No. NDT350x70
70mm (2.8"), FL=350mm
details require sample
 
3"inch/80mm terrestrial telescope
Item No. NDT400x80
80mm (3"), FL=400mm
details require sample
 
3.5"inch/90mm terrestrial telescope
Item No. NDT500x90
90mm (3.5"), FL=500mm
details require sample
 
50mm/2"inch (f=360mm) terrestrial telescope
Item No. F360x50M
50mm (2"), FL=360mm
details require sample
 
2.8"inch/70mm terrestrial telescope
Item No. F300x70M
70mm (2.8"), FL=300mm
details require sample
 
2.8"inch/70mm terrestrial telescope
Item No. F400x70M
70mm (2.8"), FL=400mm
details require sample
 
Portable Telescopes
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2"inch/50mm portable telescope
Item No. F360x50TX
50mm (2"), FL=360mm
details require sample
 
2.4"inch/60mm portable telescope
Item No. F700x60TX
60mm (2.4"), FL=700mm
details require sample
 
2.8"inch/70mm portable telescope
Item No. XWJ
70mm (2.8"), FL=300mm
details require sample

large refractor telescope with case
Item No. DT820x127EQ5/ST2/case
127mm (5"), FL=820mm
details require sample
 
Equatorial Telescopes
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2.4"inch/60mm equatorial telescope
Item No. DT900x60EQ4/AT3
60mm (2.4"), FL=900mm
details require sample
 
2.8"inch/70mm equatorial telescope
Item No. DT350x70EQ4/AT3
70mm (2.8"), FL=350mm
details require sample
 
2.8"inch/70mm equatorial telescope
Item No. NDT700x70EQ4/AT2
70mm (2.8"), FL=700mm
details require sample
 
2.8"inch/70mm equatorial telescope
Item No. NDT900x70
70mm (2.8"), FL=900mm
details require sample
 
3"inch/76mm equatorial telescope
Item No. NDT900x76EQ4/AT2
76mm (3"), FL=900mm
details require sample
 
3.2"inch/80mm equatorial telescope
Item No. DT400x80EQ7/AT3
80mm (3.2"), FL=400mm
details require sample
 
3.2"inch/80mm equatorial telescope
Item No. NDT640x80EQ7/AT2
80mm (3.2"), FL=640mm
details require sample
 
3.2"inch/80mm equatorial telescope
Item No. NDT900x80
80mm (3.2"), FL=900mm
details require sample
 
3.6"inch/90mm equatorial telescope
Item No. DT500x90EQ7/AT3
90mm (3.6"), FL=500mm
details require sample
 
3.6"inch/90mm equatorial telescope
Item No. NDT700x90EQ7/AT2
90mm (3.6"), FL=700mm
details require sample
 
3.6"inch/90mm equatorial telescope
Item No. NDT900x90
90mm (3.6"), FL=900mm
details require sample
 
2.4"inch/60mm equatorial telescope
Item No. F900x60EQ-A
60mm (2.4"), FL=900mm
details require sample
 
3.2"inch/80mm equatorial telescope
Item No. F400x80EQ-A
80mm (3.2"), FL=400mm
details require sample
 
Achromats
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4"inch/102mm short focus length achromatic telescope
Item No. DT660x102EQ5/AT5
102mm (4"), FL=660mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. NDT1000x102
102mm (4"), FL=1000mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. NDT635x127EQ5/ST2
127mm (5"), FL=635mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. NDT820x127
127mm (5"), FL=820mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. NDT1200x127
127mm (5"), FL=1200mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. NDT760x152EQ5/ST2
152mm (6"), FL=760mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. NDT990x152
152mm (6"), FL=990mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. NDT1200x152
152mm (6"), FL=1200mm
details require sample
 
102mm/4"inch, f=600mm achromatic telescope
Item No. F600x102EQ-IV-A
102mm (4"), FL=600mm
details require sample
 
102mm/4"inch, f=900mm achromatic telescope
Item No. F900x102EQ-IV-A
102mm (4"), FL=900mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. F700x127EQ-IV-A
127mm (5"), FL=700mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. F1200x127EQ-IV-A
127mm (5"), FL=1200mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. F750x150EQ-IV-A
150mm (6"), FL=750mm
details require sample
 
80mm/3.2"inch, f=900mm achromatic telescope
Item No. F1200x150EQ-IV-A
150mm (6"), FL=1200mm
details require sample
 
Large Refractors
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8"inch/200mm large refractor telescope
Item No. NDT2400x200
200mm (8"), FL=2400mm
details require sample
 
8.5"inch/216mm large refractor telescope
Item No. NDT2700x216
216mm (8.5"), FL=2700mm
details require sample
 
8.8"inch/220mm large refractor telescope
Item No. NDT2700x220
220mm (8.8"), FL=2700mm
details require sample
 
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