William Optics SPL



The William Optics SPL(Super Planetary Long eye-relief) eyepieces have been created for users who require high-power and sharp and contrast views for planetary observations. The long eye relief is an advantage for star gazers who wear eyeglasses and for individuals who do not want to strain their eyes during the course of viewing sessions.

These high quality optical lens have special glasses and perfect multi-coatings which make the optical performance of SPL incredible in virtually any telescope.

An incredibly well corrected field of view, devoid of optical aberrations means that you can at long last appreciate planets as they deserve to be observed.

With good transmittance and excellent color rendition, it allows you to delight in planetary details you may have missed up to now. You can now abandon ghosting and flares to many other telescope eyepieces.

Readily available in 3 focal lengths, 3mm, 6mm, and 12.5mm, these eyepieces will certainly meet the needs of any power requirement. Easy to Barlow, they will produce awesome results even when used at the highest powers (so long as atmospherical circumstances and your telescope can deal with such high powers).

All 3 focal lengths feature very long eyerelief for optimum viewing comfort even for individuals who wear eyeglasses. The lens edges are blackened the barrel finished in flat black paint to minimize sources of possible reflections.

Being extremely competitively priced these planetary eyepieces will inspire you to acquire the entire series to add to your keep-a-lifetime eyepieces.

Model SPL 3

  • Focal Length 3mm
  • Lens Structure (#Elements/#Groups) 7/4
  • Field of View 55°
  • Eye Relief 20mm
  • Barrel 1.25"
  • Coating FMC
  • Parfocal Yes
  • Weight 200g

Model SPL 6

  • Focal Length 6mm
  • Lens Structure (#Elements/#Groups) 7/4
  • Field of View 55°
  • Eye Relief 20mm
  • Barrel 1.25"
  • Coating FMC
  • Parfocal Yes
  • Weight 150g

Model SPL 12.5

  • Focal Length 12.5mm
  • Lens Structure (#Elements/#Groups) 7/4
  • Field of View 55°
  • Eye Relief 20mm
  • Barrel 1.25" "
  • Coating FMC
  • Parfocal Yes
  • Weight 150g






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