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Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces

Item# EXP001
 
5.0

(17 Ratings)

Customer Q & A
1. Focal Length:
20mm 100 Degree Eyepiece 2-Inch Format

Price:

$299.99

List Price: $749.99
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Details & Dimensions
Guarantee & Returns
  • 100 Degree Apparent Field
  • 2-Inch Format (30mm is 3-Inch Format)
  • Available in 30, 25, 20mm, 14mm or 9mm focal lengths
  • Nitrogen Purged and completely waterproof
  • Tapered Barrel for Extra Security

Description

The development of the Explore Scientific 100° Series Nitrogen-Purged Waterproof™ Eyepiece was a collaborative effort of astronomers and engineers who tested our prototypes again and again, in the field and in the factory to make refinements to produce the final production eyepiece.

 

These eyepieces with their huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods. These ultra-wide angle eyepieces played a critical role in the military for aiming at targets, and their long eye-relief counterparts helped reduce eye injury from recoil.

 

Each 100° Series Nitrogen-Purged Waterproof eyepiece is internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fine particulates and fungus, and to maximize the life of the internal coatings.
To make sure, every 100° eyepiece is tested by submerging them down to 1 meter of water for 30 minutes

 

Protection from the Outdoors - By making the eyepiece body nitrogen-purged and waterproof eyepiece internal elements will 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. Our waterproof eyepiece is easier to clean, and there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements. To insure a perfect seal we test every eyepiece in one meter of water for 30 minutes.

 

  • #EP1009-00 - 9mm 100° WP Eyepiece; 2.0-inch 15.7mm field stop 12.5mm Eye Relief Dimensions L=145mm x W=60mm Weight 21.2 oz
  • #EP10014-00 - 14mm 100° WP Eyepiece; 2.0-inch 24.4mm field stop 14.5mm Eye Relief Dimensions L=157mm x 70mm Weight 29.4 oz
  • #EP10020-00 - 20mm 100° WP Eyepiece; 2.0-inch 34.8mm field stop 14.5mm Eye Relief Dimensions L=156mm x W=70mm Weight 38.1 oz
  • #EP10025-00 - 25mm 100° WP Eyepiece; 2.0-inch 41mm field stop 14.5mm Eye Relief Dimensions L=140mm x W=73mm Weight 41.5 oz
  • #EP10030-00 - 30mm 100° WP Eyepiece; 3.0-inch 52.2mm field stop 19mm Eye Relief Dimensions L=200mm x W=107mm Weight  82.9 oz

 

Shipping Restrictions:
Only ships in contiguous USA.

Dimensions & Specifications

Brand

Explore Scientific

Options

Focal Length:

Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces
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The Perfect Accessories

Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces
 
4.8

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (14)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Quality lenses (13)
  • Strong construction (12)
  • Accurate (8)
  • Easy to use (6)

Cons

  • Heavy (10)

Best Uses

  • Astronomy (15)
    • Reviewer Profile:
    • Casual/ recreational (8), Avid adventurer (7)
    • Was this a gift?:
    • No (16)

Reviewed by 17 customers

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Displaying reviews 1-5

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5.0

9MM

By Layton

from RICHARDSON,TX

About Me Avid Adventurer

Verified Buyer

Pros

  • Easy To Use
  • Good Padding
  • Great Optics
  • Strong Construction

Cons

  • Heavy

Best Uses

  • Astronomy

Comments about Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces:

First thing I noticed when I received this product, was the very nice packageing that Explorer Scientific puts around these eye peices. The 2nd thing I noticed was the weight! The eyepeice felt VERY sturdy and well constructed. The best analogy I can make for this if you have ever felt an Apple iPad vs a cheap plastic tablet, it has a much more solid feel to it. My first light with the eyepeice was Saturn, and wow, ploped it in a 1550MM 10" Newtonian telescope and wow. I felt like I was sticking my eye in a fish bowl and looking around. HUGE field of view! Not to mention Saturn looking the sharpest and largest I have ever seen it! Other observations followed with a close up of the Ring Nebula, Blinking PN, and Hercules cluster, each of which was a breath taking improvement over my 9mm Plossl that came with the scope.

  • Was this a gift?:
  • No
 
4.0

great eyepieces

By Ramiro

from EL PASO,TX

About Me Casual/ Recreational

Verified Buyer

Pros

  • Accurate
  • Easy to Use
  • Quality Lenses
  • Strong Construction

Cons

  • Heavy

Best Uses

  • Astronomy

Comments about Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces:

I purchased all three and am very happy with every step of the purchase as well as with the eyepieces.

  • Was this a gift?:
  • No
 
5.0

Great EP

By Barry

from YUKON,OK

About Me Casual/ Recreational

Verified Buyer

Pros

  • Quality Lenses
  • Strong Construction

Cons

    Best Uses

    • Astronomy

    Comments about Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces:

    Great EP with incredible views. It's a little heavy, but if you've done your research, you already know that. Also, on another note, the new box packaging is awesome.

    • Was this a gift?:
    • No
     
    5.0

    Great eyepiece at a great price

    By James

    from DEBARY,FL

    About Me Avid Adventurer

    Verified Buyer

    Pros

    • Accurate
    • Quality Lenses
    • Strong Construction

    Cons

      Best Uses

      • Astronomy

      Comments about Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces:

      Got to view Jupiter the other night and the detail I was able to see was wonderful.

      • Was this a gift?:
      • No
       
      5.0

      Everything it is said to be!

      By New to Astronomy

      from Scottsdale, AZ

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Excellent edge to edge
      • Quality Lenses

      Cons

      • Heavy

      Best Uses

      • Astronomy

      Comments about Explore Scientific 100 Degree Series Nitrogen-Purged Waterproof Eyepieces:

      There are many write ups about the quality of this lens and they are all on the mark. This lens is unsurpassed quality for the price. Combining a 2 inch format, 14mm focal length, and 100 degree field of view is a great combination for all of you who can use 2 inch eyepieces. I would definitely recommend it if you can afford the price.

      • Was this a gift?:
      • No

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