Product Code: 1598351

Celestron Ultima Duo 21mm Eyepiece

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Order in the next 12hrs 58mins for delivery on Thursday, 23 November

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was: £139.00 £69.50

1x Celestron Ultima Duo 21mm Eyepiece Sorry, there are no more available.

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With a built-in T-adapter for astroimaging, the Ultima Duo eyepiece from Celestron is more than just an eyepiece. With fittings for both 1.25” and 2” focusers, it can be used with almost any telescope, and has 8 lens elements in 5 groups to ensure that chromatic aberration and field curvature are corrected, guaranteeing a sharp, high-quality result. Its multi-coated optics are designed to increase light transmission and contrast, and it has a 68-degree apparent field of view. Enjoy impressive views and a brilliant optical system with the Celestron Ultima Duo 21mm Eyepiece.

Celestron Ultima Duo 21mm Eyepiece:

Key Features:

High performance photo-visual eyepieces quickly switch between observing and imaging

Fully multi-coated optics with 8 elements in 5 groups for the best correction of chromatic aberration and field curvature

Extra wide 68-degree apparent field of view

Full 20 mm of eye relief

Integral 42 mm T-adapter threads and threaded barrel for filters

Specification:

  • Adapter Threads: 42mm T-Thread under Eye Cap
  • Lens Design: 8 Elements in 5 Groups
  • Optical Coatings: Fully Multi-Coated
  • Apparent Field of View: 68 Degrees
  • Filter Thread: Accepts 1.25 inch screw in filters
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Product Specification

Eyepiece Barrel Dual fit
For Use With Any 1.25 or 2 Inch eyepiece holder
Type Wide angle Eyepiece
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Product Code: 1598351-wex Manufacturers Part Number: 93445 Got a question? Get it answered...