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Explore Scientific 100-Degree Eyepiece Kit with Case - EPWP100-KIT

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SKU: EXS-EPWP100-KIT

Explore Scientific 100-Degree Eyepiece Kit

This four-piece eyepiece kit from Explore Scientific includes a 5.5 mm, 9 mm, and 14 mm 100-Degree Argon-Purged Waterproof Eyepiece and a soft-sided case that will keep your eyepieces safe and clean. Each eyepiece is individually boxed in Explore’s famously beautiful Will Tirion star map box, and come with caps for both ends.

About Explore Scientific 100-Degree Eyepieces

The Explore Scientific 100° Series™ eyepieces are hyper-wide class oculars that can transform your visual astronomy experience. You may be startled at the amazingly wide expanse of inky black sky you behold the first time you bring your eye to a 100° Series eyepiece, and after awhile, you may even forget that you have an eyepiece between you and the universe! With an apparent field of view that is close to the maximum for hyper-wide eyepiece design, objects are not only easier to locate, but for non-driven telescopes the object will stay in the field of view for a very long time before any adjustments need to be made.

Another great benefit of hyper-wide eyepieces is the ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.

The Explore 100° Series eyepieces come with a removable and foldable soft silicone rubber eyecup for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope.

By making the eyepiece body Argon-purged, the eyepiece’s internal elements will remain as pristine as the day they were assembled. Argon atoms are “ larger” than that of Nitrogen and therefore they are less likely to “leak” or diffuse their way through the seals over the life of the eyepiece. The atomic radius of Argon is larger than Nitrogen by 0.13 angstroms and has a larger atomic volume by 11.2 cubic centimeters/molecule. Argon also has superior inertness vs Nitrogen (i.e. forming few or no chemical compounds with other elements) that prevents adverse reactions with eyepiece components and therefore extends the longevity of the internal components and also prevents chemical reactions with other elemental contaminants that may be introduced through a weakened seal. And finally, because Argon is less conductive of heat than Nitrogen, Argon cools slower thereby buffering the effects of rapid temperature changes of the optics.

The sealed, dry environment is impervious to internal fogging and contaminants such as fungus growing in between the lens elements. Explore Scientific’s waterproof eyepieces are easier to clean, and there is no risk of cleaning solution migrating from the top of the lens and seeping around the edges to be trapped in between elements. To insure a perfect seal, Explore tests every eyepiece in one meter of water for 30 minutes.

5.5 mm Specifications

  • Focal Length:  5.5 mm
  • Field of View:  100 degrees
  • Barrel Size:  2"
  • Coatings:  EMD
  • Waterproof:  Yes, purged with Argon gas

9 mm Specifications

  • Focal Length - 9 mm

  • AFOV - 100 degrees

  • Eye Relief - 14.5 mm

  • Nitrogen-Purged and Waterproof: Submersible to 1 meter for 30 minutes; Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging

  • Coatings - All lens-to-air surfaces are fully multi-coated

  • Eyecups - Soft rubber folding style; Replaceable

  • Weight - 2 lb

14 mm Specifications

  • Focal Length - 14 mm

  • AFOV - 100 degrees

  • Eye Relief - 14.5 mm

  • Argon-Purged and Waterproof: Submersible to 1 meter for 30 minutes; Internally sealed and purged with inert, dry argon gas to prevent internal fogging

  • Body - Anodized Black Aluminum; Laser-Etched Description and Serial Number; Rubber Grip: Internally O-Ring Sealed

  • Barrel - Stainless-Steel, 2-inch, Double Taper, Accepts Standard 2-inch Filters

  • Coatings - All lens-to-air surfaces are fully multi-coated

  • Eyecups - Soft rubber folding style; replaceable

    Weight - 2 lb

All Explore Scientific telescope accessories are covered under their standard U.S.A. One Year Limited Warranty against defects with proof of purchase, but you can extend this limited warranty to five years by simply filling out the product registration and submit it to Explore Scientific within 60 days. This program is also available to the person who receives your gift of an Explore Scientific telescope. You don't need to give them the purchase receipt, just remind them to fill out the registration and submit it to Explore Scientific and they will take care of the rest.