Explore Scientific 2" 100° Series Nitrogen-Purged Waterproof Eyepiece - 14mm
Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 100° Series hyper-wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. And yes, they are indeed ruggedized and waterproof to withstand the outdoor environment.
The visual effect of these eyepieces with their long eye-relief and their 100° apparent field is an extreme full-immersion experience. You have to try it understand the visual impact that these eyepieces produce.
Like all Explore Scientific eyepieces, the lens elements of the 100° eyepiece are meticulously cleaned and aligned before being installed in their precision machined lens barrels.
Each lens and lens grouping have EMD (Enhanced Multilayer Deposition) Coatings and are edge-blackened to eliminate light scatter and maintain image contrast. Contrast is further enhanced with baffles that mask and deflect unwanted stray light.
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.
Explore Scientific's eyepieces are backed with their exclusive Explore STAR Transferrable Extended Life of the Product Warranty. Limited Warranty is one year, which converts to the Explore STAR Transferrable Extended Life of the Product Warranty when product is registered within 60 days of purchase. We think that you will find Explore Scientific eyepieces rank among the finest obtainable and represent an outstanding value.
- Skill Level
- Time with Product
Dec 8, 2013
- User Notes:
- Review by Scanning4Comets of Canada.
Quality Lenses,Strong Construction,AccurateCons:
The 14mm ES 100 is an excellent eyepiece in its own right. However, a few things would make this the perfect eyepiece:Bottom Line: Would you recommend this item? Yes
1. If it was lighter in weight.
2. If it was not so bulky.
3. If it had longer eye relief and not have a recessed top lens.
Otherwise, everything about this eyepiece is top notch. If you have a large scope and need that 100 degree field, this is it. The apparent field alone is so huge, you feel like you are falling in the view! Great for capturing really wide open clusters, or a number of galaxies in one view. It is also excellent on The Veil Nebula with a UHC filter or an O-III to see detail with.
This review was provided courtesy of AgenaAstro.comMar 1, 2013
Quality Lenses,Nice Construction,Sharp,Sharp To The EdgesCons:
I've used this in a 150mm f5 refractor, a 102mm f6.5 refractor, a 120mm f7.5 refractor, a 203mm f7 Newt, and an 8" SCT. It provides pinpoint stars right out to the edges in each of these scopes and I have not detected any CA in the scopes that wouldn't have any inherent CA. It is heavy so if you're already pushing the limits of your mount and you don't already use any accessories as heavy as this you're going to need a sturdier mount! This is a world class EP by any definition and I don't regret the purchase.Bottom Line: Would you recommend this item? Yes
This review was provided courtesy of AgenaAstro.com
astroram New Member
- Skill Level
- Time with Product
Sep 3, 2009
- User Notes:
Explore Scientific 14mm 100 degree FOV waterproofPros:
Awesome space walk effect, sharp to outer 10% of FOV. Comfortable eye reliefCons:
Heavy, you will need to re-balance your smaller scope.Comments:
The ES 14mm is taller and slightly heavier then my Meade series 4000 UWA (82 degree AFOV). I have always felt that this was the best eyepiece Meade ever produced, and it would have to take one heck of an eyepiece to dethrone it. WELL One heck of an eyepiece has dethroned it.Bottom Line: Would you recommend this item? Yes
Through my SkyWatcher 120ED Pro refractor, the ES 14mm had substantially more FOV, stars were sharp TO the edge in the scope which is F7.5. The eye relief was comfortable for me as I do not wear eyeglasses, it gave everything I looked at a walk in the space effect!! I noticed no false color at all caused by the eyepiece. Looking at M57 through the ED scope with a myriad of pinpoint stars across that huge field, made M57 look 3D. The Meade was no slouch either, it showed pinpoint stars almost to the very edge like the ES, but the FOV was not as dramatic. Now the test would be a fast optical system. Enter my son's 6" F5 home made dob. Since last night the skies were not as pristine and forecasts of thunder showers, I did not take out the 22.6" to test the ES 14mm.
I did use my sons homemade 6"f5 dob for a brief comparison of both eyepieces. I looked at two objects with this scope M13 and M57. First with the Meade 14mm UWA. A very impressive FOV and I saw some resolution in M13. The stars in the 6"F5 scope were sharp until the outer 10% of the FOV then I did notice some seagull formation. I now placed my new ES 14mm. Wow, the FOV now really looks immense, the globular is floating in 3D amongst the field stars. Moving the scope so I can see how the brighter stars react, I notice the very outer edge had loss of sharpness, I estimate it was less then the Meade UWA so less then 10%. Moving to M57, with the ES 14mm I had a very similar view as i did the evening before with the 120 ED APO refractor, but of course not to that extent. The image through the little DOB, none the less was breathtaking. This new eyepiece is very impressive. Using a lower quality eyepiece a Meade 32mm SWA series 4000, the outer 20% of the FOV was affected. This definitely is a fine eyepiece. I am thrilled I added this eyepiece to my collection.
The specs. weight = 1 lb 14 oz, eye relief is 14.5mm, the eyepiece has 9 Elements; Combination of: Dense Crown, Light Crown, Dense Flint, and Lanthanum Optical Glasses, the barrel is Stainless-Steel, 2-inch, Double Taper, Accepts Standard 2-inch FiltersSort by
Apparent Field of View 100° Barrel Size 2" (50.8mm) Bolt Case Included Discontinued Item Bolt Case Size Agena 85x120mm Coatings EMD (Enhanced Multilayer Deposition) Coatings Design Combination of: Dense Crown, Light Crown, Dense Flint, and Lanthanum Optical Glasses End Caps 2 Eye Relief by Design 14.5mm Filter Threads Standard 2" Filter Thread (M48 x 0.75) Focal Length 14mm Lens Elements 9 Rubber Eye Guard Rubber Folding Type Blackened Lens Edges Yes Additional Information Body: Anodized Black Aluminum; Laser-Etched Description and Serial Number; Rubber Grip: Internally O-Ring Sealed and Nitrogen Purged
Barrel: Stainless-Steel, Double Taper, Accepts Standard Filters
Manufacturer Explore Scientific Eyepiece Focal Length 10.1mm - 15mm Eyepiece Field of View Over 80 degrees Eyepiece Series Explore Scientific 100° Barrel Type Tapered barrel Eyepiece Weight 30oz (850.49g)