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Edmund Scientific telescope reflector Astroscan2001 1.25
Edmund Scientific telescope reflector Astroscan2001 1.25
Edmund Scientific telescope reflector Astroscan2001 1.25
Edmund Scientific telescope reflector Astroscan2001 1.25
Edmund Scientific telescope reflector Astroscan2001 1.25
Edmund Scientific telescope reflector Astroscan2001 1.25
Edmund Scientific telescope reflector Astroscan2001 1.25
Edmund Scientific telescope reflector Astroscan2001 1.25

Edmund Scientific telescope reflector Astroscan2001 1.25" RKE 8mm clean USA 1988

$ 0.18

Availability: 100 in stock
  • Series: Astroscan
  • Type: Kellner/Achromat
  • Model: 1.25-inch RKE 8mm eyepiece
  • Features: fully coated
  • Focal Length: 8mm
  • Telescope Type: Reflector
  • Compatible Series: any telescope with a 1.25-inch focuser
  • Condition: This eyepiece is all original from Edmund Scientific with no repairs or modifications. This is in beautiful, top-grade collector's condition for its age. Entire eyepiece body is in very excellent, very near perfect mint condition with NO signs of really being handled. No scratches, tons of dimples, or even color fade to the rubber ring or anodized aluminum. Optics are super clean and crystal clear. NO fungus or fogging. No dust issues. No pitting or swirls issues.
  • Country/Region of Manufacture: United States
  • Compatible Model: any telescope with a 1.25-inch focuser
  • All returns accepted: ReturnsNotAccepted
  • Brand: Edmund Scientific
  • Compatible Brand: For Celestron
  • Item Diameter: 1.25 in

    Description

    This auction is for a 1988 Edmund Scientific (USA) 1.25-inch RKE 8mm eyepiece.
    This eyepiece will give a generous 45-degree field of view with a manageable 8mm of eye relief. It will be tight for most eyeglass wearers, but on the plus side, this model is still VERY easy for newcomers to use as positioning of the eye at the focuser is not finicky for maximum enjoyment.
    Beautifully built of solid milled, anodized aluminum and optical glass with a dyed rubber grip ring. Weighs exactly 1.7 ounces.
    These modified Kellners (Rank Kellner) are 3-element designed, but unlike the conventional Kellner, these give a wider field of view and do work well in rich field telescopes, such as the f/4.25 Astroscan2001 and f/5.6 maksutov spotters.
    These eyepieces are very close to plossls as far as sharpness and primarily lose-out when going for contrast. Aside from Pentax and possibly the rare Takahashi Kellners, these are some of the very best 3-element designed optics money can buy. And though they will have some ghosting evident on objects with high surface brightness set against a black background, their eye relief is more comfortable over conventional Kellners.
    As far as I know (and I've owned A LOT of telescopes of various designs) the RKE cooperates nicely with any major brand telescope from f/4 to f/18; be it a refractor reflector or cassegrain. Of the Kellner-class eyepieces, THIS IS the one to have and they are now decades-long out of production.
    Packed with great care. Higher price in shipping indicates this must be insured to all global locations.