Orion 7.2mm-21.6mm Zoom Telescope Eyepiece (1.25 Inch)


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SKU: 08550

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  • The Orion 7.2-21.6mm Zoom Telescope Eyepiece allows you to change magnification power without swapping out eyepieces
  • Quickly twist the eyepiece housing to change the focal length from 21.6mm at the lowest power to 7.2mm at the highest, allowing a continuous range of magnification between
  • The eyepiece consists of seven lens elements in four groups, which are fully multi-coated with anti-reflection coatings for a crisp and bright view.
  • Exceptionally long 18mm-20mm eye relief range allows for the use of eyeglasses without reducing the field of view visible through the eyepiece
  • 65-deg to 42-deg field of view

The Orion 7.2mm-21.6mm Zoom Telescope Eyepiece is a welcome addition to any telescope accessory toolkit. This eyepiece has been a proven performer – it comes included in the Orion GrandView ED line of spotting scopes. We’ve been so impressed with the optical performance there that we realized it would make an excellent astronomical eyepiece in its own right!

Having multiple magnifications all built into one eyepiece allows the observer to quickly zoom to the right power for lunar, planetary and deep-sky observing, optimizing the size and contrast of the object on the fly. Actual magnification range will depend on the focal length of your telescope, but as an example: in an Orion SkyQuest 8″ Dobsonian reflector with a 1200mm focal length, this eyepiece provides a continuous magnification range from 56x up to 167x.

This 7 element telescope eyepiece provides exceptional edge performance, and boasts fully multi-coated optics and extra-long eye relief ranging from 20mm (at 21.6mm) to 18mm (at 7.2mm). The apparent field of view angle ranges from 42° (at 21.6mm) to 65° (at 7.2mm). Excellent optics, coupled with a wide field of view make this eyepiece just about the perfect eyepiece to pair with any telescope!

User Level Intermediate
Design Proprietary
Eyepiece focal length 21.6mm – 7.2mm
Barrel size 1.25″
Apparent field of view 42.0° – 65.0°
Eye relief 20.0mm
Coatings Fully multi-coated
Number of elements 7
Filter threads No
Parfocal No
Field stop diameter 16.0mm
Barrel security recess No
Blackened lens edges Yes
Rubber eyeguards Yes
Body material Aluminium
Case No
Weight (grams) 225
Dimensions 92mm. X 50mm

Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only.

SKU: 08550

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