Opticstar/Ascension ED Apochromatic 21mm eyepiece

Ideal for observing all types of astronomical objects.

  • Special ED glass
  • Focal length: 21mm
  • Apparent field of view (FOV): 55°
  • Optical elements: 6
  • Optical coatings: Fully Multi-Coated
  • Threaded for 1.25" filters
  • Barrel size: 1.25"
  • End cups included
  • Bolt-type plastic case included
  • UK warranty
Opticstar/Ascension ED Apochromatic 21mm eyepiece
  • Product code: ED5521
  • Availability: Out of stock
  • Incoming: To be confirmed
  • Original Price: £ 75.00
GBP £ 37.50 (GB VAT-free)
out of stock
Shipping rates
England & Wales
£ 6.00
Scotland Central & South
£ 6.00
Scotland North
£ 6.00
Northern Ireland
£ 6.00
UK islands (from)
£ 6.00
European Union (from)
£ 12.00
Worldwide (from)
£ 15.00

Description

The Opticstar/Ascension ED eyepieces are ideal for observing all types of astronomical objects, from the moon and the planets to nebulas and galaxies. Special ED glass is used in two out of the six elements minimising chromatic aberrations.

The latest generation of these ED eyepieces use broadband fully multi-coated optics that provide excellent image brightness and contrast while internal reflection effects are kept to a minimum. All eyepieces in the range are parfocal. Long eye relief makes these eyepieces a pleasure to use and are highly recommended for people that wear spectacles.


U.K. WARRANTY

INTERMEDIATE

VISUAL

OPTICS

ASTRONOMY
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These Opticstar/Ascension eyepieces offer superior performance due to the inclusion of two ED optical elements rather than just the one, typically offered in other ED designs.

Eyepiece includes free bolt type plastic case.

Carries full one year UK warranty.

Opticstar/Ascension ED Apochromatic eyepieces.
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Opticstar/Ascension ED Apochromatic 21mm eyepiece
Attribute Specification
Product Code (SKU) ED5521
Universal Product Code (UPC) n/a
Warranty 1 year UK warranty
Series ED
Experience Level Intermediate
Optical Elements 6
ED Optical Elements 2
Focal Length 21mm
Optical Coatings Broadband Fully Multi-Coated (FMC)
Parfocal Yes
Barrel Size 1.25" (31.7mm)
Apparent Field of View (FOV) 55°
Eye Relief 20mm
Filter Support Threaded for 1.25" filters
Storage Case Bolt-type plastic case included
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