Tele Vue 3.7mm Ethos-SX Eyepiece - 1.25" & 2"

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• The 3.7 mm Ethos-SX Eyepiece (the Simulator eXperience) is part of the Tele Vue Ethos Eyepiece Series.

  The Tele Vue 3.7mm Ethos-SX eyepiece is designed and crafted to combine its exceedingly wide field of view with all the contrast, color-rendition, distortion correction and center-to-edge sharpness needed to achieve that natural view. Beyond the desire to simply achieve 110 degrees, the extended field of view gave Tele Vue the ability to produce a superb planetary eyepiece with a deep sky true field of view that logically fits within the rest of the Ethos eyepiece line.

  With 110 degrees, the Ethos-SX has 21 percent more AFOV area than the 100 degree Ethos design. This permits a nice 62 percent power increase from a 6 mm Ethos, while retaining 68 percent of its TFOV. The 3.7 mm actually has more TFOV than 8 mm Plossl, 6 mm Radian, and 5 mm Nagler Type-6!

  The 3.7mm is a 1.25" format and is parfocal with the wide range of 1.25" Tele Vue Plossls, Panoptics, Radians, Naglers, Nagler Zooms, and 6 mm and 8 mm Ethos eyepieces. The screw-on 2" adapter (included) is designed to make it parfocal with 13 mm and 10 mm Ethos when they are used in their 2" modes.

  Tele Vue 3.7 mm Ethos-SX Specifications...

  • Model: 3.7 mm Ethos-SX 110 (Simulator eXperience)
  • Apparent field: 110 degrees
  • Focal length: 3.7 mm
  • Effective field stop diameter: 7.04 mm
  • Eye relief: 15 mm (accepts DIOPTRX eyesight astigmatism corrector)
  • Weight: 1.10 lb/ 17.7 oz; 2" adapter/stand: 2 oz
  • Size Barrel: 1.25"
  • Includes 2" adapter

   

  OPT Product Number: TE-ETH-03.7

   

• specifications

  Dust Caps Included	Yes
  Eye Guard Included	Yes
  Eye Relief	15mm
  Field of View	110 degrees
  Field Stop	7.04mm
  Focal Length	3.7mm
  Free Shipping	Yes
  Size	1.25"
  Size	2"
  Warranty	Lifetime Warranty