Opticstar Zoom XL 7.2mm-21.5mm eyepiece

For astronomical and terrestrial use as well as for Solar observation.

  • Particularly flat field of view
  • Focal length: 7.2mm-21.5mm Zoom
  • Field of view: 40° - 60°
  • Parfocal at all magnifications
  • Optical elements: 7
  • Optical coatings: Fully Multi-Coated
  • Adjustable twist-type eyeguard
  • Excellent mechanical construction
  • Threaded for 1.25" filters
  • Barrel size: 1.25"
  • Sturdy cardboard storage box
  • UK warranty
Opticstar Zoom XL 7.2mm-21.5mm eyepiece
  • Product code: XLZ72
  • Availability: In stock
  • Despatch: 2 business days
  • Retail Price: £ 125.00
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)
£ 18.00


This very high-quality zoom eyepiece delivers a particularly flat field of view, high contrast and excellent colour rendition. It is recommended for astronomical and terrestrial use as well as for Solar observing with an appropriate telescope.

The eyepiece provides an apparent field of view of 60°-40° and continuous focal lengths between 7.2mm and 21.5mm, this range particularly suits SCT type telescopes that will operate at their highest magnifications at around 7.5mm under reasonable conditions. When used in conjunction with a 2x barlow the eyepiece will reach the maximum possible magnification for a f/4.8 Newtonian telescope thus making it very versatile with a variety of telescopes of different optical designs, focal lengths and focal ratios.





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The excellent mechanical construction and finish when combined with a sizeable 15mm eye relief an adjustable twist-type eyeguard makes this eyepiece comfortable to use. In addition, the eyepiece is parfocal and as such there is no need to refocus when changing magnifications.

Optical performance

The optical train consists of seven lenses in four separate groups, all optical surfaces are broadband fully multi-coated and all lenses feature blackened edges, the eyepiece also benefits from internal baffling. These features reduce internal reflections to an absolute minimum and help to significantly increase contrast.


The Eyepiece has a 1.25" nosepiece and is threaded for filters. It weighs 155 grams, measures 81mm tall (including the nosepiece) and has a 48mm maximum diameter.

Carries full one year UK warranty.

Opticstar Zoom XL eyepieces.
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Opticstar Zoom XL 7.2mm-21.5mm eyepiece
Attribute Specification
Meade Product Code (SKU) XLZ72
Universal Product Code (UPC) n/a
Warranty 1 year UK warranty
Series XL
Experience Level Intermediate
Optical Design Zoom
Optical Elements 7
Optical Groups 4
Focal Length Variable between 7.2mm to 21.5mm
Optical Coatings Fully Multi-Coated
Apparent Field of View (FOV) Variable between 40° to 60°
Eyepiece Barrel Size 1.25"
Eye Relief 15mm
Eyeguard Adjustable twist type
Weight 155 grams
Width 48mm
Height 81mm
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