Explore Scientific 92 LER Series 2" Eyepieces

Explore Scientific 92 LER Series 2'' Eyepieces
Explore Scientific 92 LER Series 2'' EyepiecesExplore Scientific 92 LER Series 2'' EyepiecesExplore Scientific 92 LER Series 2'' Eyepieces


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Model:  es_92_17mm
Part Number:  0219917
Brand:  Explore Scientific

Explore Scientific

The Explore Scientific 92° Argon 17mm LE Eyepiece is the first in the line of Explore Scientific's 92° range of Argon-purged eyepieces.  These eyepieces are designed to balance the modern demands of field sharpness over a wide apparent field, with long eye relief, which is of particular benefit to those who wear glasses while observing. 

Whilst many advanced observers may be getting rather used to the joys of super-wide apparent field eyepieces, we're sure that this is one of the sharpest, yet most comfortable and immersive eyepieces we've ever experienced - it really is a joy to use.

The 8 lens (arranged in 6 groups) design of this eyepiece yields superbly corrected views and the 22mm eye relief and wide occular diameter combine to deliver a fantastic user experience.  The 17mm focal length will be a good fit for many different telescope designs and focal ratios. Those who have lower focal ratio instruments will adore the widefield deep sky views this eyepiece delivers.  Whilst owners of 10, 12 and 14-inch SCT or RC telescopes, who are looking for higher power planetary and lunar magnifications will love what this eyepiece does for their particular instruments.

Explore Scientific's EMD coatings provide exceptional contrast and combat internal reflections extremely efficiently.  The eyepiece has internal baffles and entirely blackened internal fittings which complement the EMD coatings.

The Explore Scientific 92° Argon 17mm LE Eyepiece is Argon purged and completely waterproof - so is impervious to dirt, moisture and fungal ingress.

Threaded to accept 2" filters. 


  • Wide-angle 92 degree Apparent Field Of View
  • Premium grade optical glass
  • All surfaces fully multicoated for maximum light transmission
  • Internal baffles and blackened lens edges and internal metal surfaces to maximise contrast and reduce ghosting
  • Long eye-relief (good for eyeglass wearers)
  • Foldable rubber eyecups
  • Tapered 2" barrel for extra security

Eyepiece Field of View Simulator

Product Specifications

Model 17mm
Product Code 0219917
Eye Relief 22mm
Field Diaphragm (virtual) 27.4mm
Barrel Size 2” / 50.8mm
Barrel Length 39mm
Lenses 8
Lens Groups 6
Height (From End of Barrel) 148mm
Width 72mm
Eyecups Foldable rubber eyecups
Weight 1100g

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