Feature
●SV171 Super-wide Angle 1.25" 8mm-24mm zoom eyepiece;SV171 zoom eyepiece allows you to change magnification power without swapping out eyepieces
●FMC glass lens; Fully multi-coated glasses for excellent image contrast and light transmission; Sharp optimal performance with low chromatic aberration
●Comfortable long eye relief design; Exceptionally long 18mm-19.5mm eye relief range allows eyeglass wearers to enjoy the entire field of view without needing to remove their glasses
●Unique humanized design;Sleek black barrel with safety undercut to reduce the possibility of the eyepiece slipping out of the focuser or diagonal
●Standard 1.25" fitting diameter compatible with any astronomical telescope with 1.25" focuser;The bottom M28.5 x 0.6 thread can also be used with standard 1.25" Filter
Description
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Just twist up eyecups allow eyeglass wearers to enjoy the entire field of view
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Exceptionally long 18mm-19.5mm eye relief range allows eyeglass wearers to enjoy the entire field
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7 Elements 4 groups made of high index glass deliver sharp; high contrast vistas
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Safety undercut to reduce the possibility of the eyepiece slipping out of the telescope or diagonal
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Blackened lens edges, anti-reflection threads for maximum contrast
8-24mm Focal Length
Just twist the zoom eyepiece housing to change the focal length,and you can get variety of viewing magnification powers. Ideal for locating an object at low magnification, then quickly zooming in to higher magnification for closer inspection, all without changing eyepieces.
Product comparison
 SV171 Telescope Eyepiece |  SV503 Telescope 70ED |  SV165 Mini Guide Scope |  SV503 Telescope 80ED |  SV503 Telescope |  SV198 Guide Scope |  SV207 Plossl Eyepiece | |
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Customer Reviews
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Price
| $75.99 | $399.99 | $53.99 | $449.99 | $649.99 | $149.99 | $35.99 |
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Feature 1
| 56 Degree with Side Extinction | Doublet air spaced achromatic | Compatible with mainstream | Doublet air spaced achromatic | Doublet air spaced achromatic | with Dual Helical Focuser | 50 Degree with Side Extinction |
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Feature 2
| Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated |
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Feature 3
| suitable for inches filter | 1:10 micro-reduction | 45mm back focus distance | 1:10 micro-reduction | 1:10 micro-reduction | Connect telescope camera | suitable for inches filter |
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Feature 4
| Metal | Aluminum | Aluminum Profile | Aluminum | Aluminum | Aluminium | Metal |
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Feature 5
| 1.25 inch | 2.75 inch | 1.25 inch | 2 inch | 4.01 inch | 1.97 inch | 1.25 inch |
Detail display
Standard 1.25" fitting diameter compatible with any astronomical telescope with 1.25" focuser;The bottom M28.5 x 0.6 thread can also be used with standard 1.25" Filter
