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Explore Scientific - 14mm 100° Nitrogen-Purged Waterproof Fully Multi-Coated Eyepiece - 2" - DISCONTINUED


Discontinued Product

Manufactured by: Explore Scientific

Explore Scientific - 14mm 100° Nitrogen-Purged Waterproof Fully Multi-Coated Eyepiece - 2" -  DISCONTINUED


This is a discontinued item. We recommend the 14mm 100° Argon Purged Eyepiece as a replacement.

Explore Scientific 100° 14mm Nitrogen-Purged Waterproof Fully Multi-Coated Eyepiece - 2" Barrel Size


The Explore Scientific 14mm 100 degree Eyepiece has been getting lots of thumbs up from seasoned amateur astronomers and now you can have one of your very own for a great price! The eyepiece is waterproof and nitrogen-purged, and it comes with a replaceable soft, folding eyecup.

These eyepieces are the world's first nitrogen-purged waterproof eyepiece with a 100° Apparent Field for astronomy. The body of the eyepiece is gas-purged and waterproof preserving the internal elements to remain as pristine as the day they were assembled. The sealed, dry environment is impervious to internal fogging and contaminants such as fungus growing in between the lens elements. The waterproof eyepiece is easier to clean. To insure a perfect seal the eyepiece is tested in one meter of water for 30 minutes.

 Go Hyper-Wide & Experience the Vastness of Space Like Never Before

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.


Explore Scientific 100° Eyepiece Highlights

Optimized Optical Design - Explore 100° Series hyper-wide eyepieces are optimized through each design, fabrication, and testing process to produce flat-field images that have high contrast and resolution.

Exotic Glass Combinations for Optimum Results - Eyepieces are constructed of 8 or 9 lens elements (depending on the focal length) that are fabricated from combinations of Dense Crown, Light Crown, Dense Flint, and Lanthanum optical glass.

Durable Coatings & Finishing Touches - Each element in your Explore Scientific 100° eyepiece is fully multi-coated, resulting in bright, sharp images, and every element has blackened edges to reduce internal reflections and increase contrast.

Waterproof, Fog-Proof Housing - The internal optics of all 100° Series eyepieces are housed in a gas-purged, waterproof barrel that keeps them as pristine as the day they were manufactured. Cleaning is much easier, and there is no need to worry about water or fluid becoming trapped in between elements due to rain, spills, heavy dew, or getting over-enthusiastic with lens cleaning fluid.

Hyper-Wide Field Experience -  The 100° experience is different than that of more conventional eyepieces. A hyper-wide field of view means you can see more of the night sky at once, allowing you to observe larger or closer objects in their entirety, or to easily use inverted vision to capture faint photons of light. Also, those using Dobsonians or other instruments without a motor drive will enjoy watching an object drift more slowly across the field of view. Manually moving your telescope to compensate for the rotation of the Earth will be required much less frequently, and that's a good thing.

Tapered 2" Barrel for Extra Security - The insert barrel of each eyepiece is double-tapered to allow smooth insertion to, and removal from, a telescope's eyepiece holder or diagonal, however the wide dimension of the taper helps prevent the eyepiece from falling out of the telescope should the set-screw holding it in place become loose. The 2" barrel is threaded to accept standard screw-on filters.

Optional Focal Extenders for Extra Magnification - Explore Scientific makes a wide variety of eyepiece focal lengths, allowing a change in magnification for just about any observational study you can think of. However, if you would like to get "double duty" out of the eyepieces in your accessory case, while still retaining the eye relief of that eyepiece, use Explore Scientific Focal Extenders.




EXPLORE SCIENTIFIC branded products are under warranty forever, and this warranty is transferrable from owner-to-owner as long as the product is registered with EXPLORE SCIENTIFIC.


This Transferrable Unlimited Lifetime Warranty covers any problem no matter what the cause. In addition, this new warranty supersedes and is retroactive for EXPLORE SCIENTIFIC branded products that are already serving in the field, provided they are registered with us.


That means that no matter what the cause of the problem, no matter if you are the second or the 20th owner, we will take care of your EXPLORE SCIENTIFIC branded product without any repair or replacement fees.  For more info watch the following video by  Mr.Scott Roberts, Founder of Explore Scientific.












 MC 11/14







Additional Information

Name Explore Scientific - 14mm 100° Nitrogen-Purged Waterproof Fully Multi-Coated Eyepiece - 2" - DISCONTINUED
Manufacturer Explore Scientific
Model EP10014-00
Discountinued Yes
Custom Stock Status Out of Stock
Angular Field of View 100°
Eye Relief 12.5mm
Eyepiece Apparent FOV 100
Eyepiece Barrel Size 2"
Eyepiece Eye Relief 12.5
Eyepiece Focal Length 9
Warranty Explore STAR Transferrable Unlimited Lifetime Product Warranty