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Explore Scientific 68° 28mm Waterproof Eyepiece EPWP6828-01

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$239.99
EPWP6828-01
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Explore Scientific 68° 28mm Waterproof Eyepiece EPWP6828-01

Your Price:
$239.99
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Explore Scientific 68° 28mm Waterproof Eyepiece EPWP6828-01


Product Description

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 62° Series Argon-Purged Waterproof extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. The visual effect of these eyepieces with their long eye-relief and their 68° apparent field is truly a full-immersion experience. The 62° Series eyepieces are parfocal (meaning they focus at near the same point regardless of the focal length you select) and 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.

Protection from the Outdoors - By making the eyepiece body Argon-purged, the waterproof eyepiece 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. 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.

Product Specifications

Item Number EPWP6828–01 EPWP6834–01 EPWP6840–01
Focal Length 28mm 34mm 40mm
Length 91.4mm 100.8mm 114.2mm
Width 61.3mm 69.6mm 80.3mm
Weight 16.1oz; 458g 24.1oz; 685g 35.2oz; 998g
Barrel Size 2.00" 2.00" 2.00"
Eye Relief 21.6mm 26.4mm 31mm
Field Stop Diameter 31.8mm 38.6mm 45.5mm

Warranty 

One Year Warranty

CA Residents: Prop 65 Warning(s) 
Shipping
 Scope Department FREE SHIPPING on all orders delivered within the contiguous United States. If your order is in stock and we process the charges to your credit card, our goal is to ship your order out within the timeframe specified on the product page. This is located near the top of the product page below the product price. If we foresee potential delays beyond this shipping window, we will reach out to you directly to inform you. If for some reason you have not received your shipment within a reasonable timeframe or have not heard from us, feel free to reach out at info@scopedepartment.com Expedited shipping is available for an additional cost on some products. Give us a call at 833-7scope or email us at info@scopedepartment.com and we will get back to you as soon as possible with a quote. Orders shipped to Alaska and Hawaii will incur freight charges and the shipping fees for those deliveries are the responsibility of the customer. Shipping charges are calculated after the order is submitted, so your order will be placed on hold until we can reach you by phone to confirm pricing 
Delivery

Estimated between  and

Will usually ship within 1 business day.

   

Please allow 10 days for your order to arrive. We source products from all over the world to bring you epic offers and the lowest prices. This means sometimes you have to wait a little longer to get your order but it's always worth it!

Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

Here are 5 more great reasons to buy from us:

   

We Put Our Customers First to us. If it doesn't fit, it breaks, you've changed your mind or for no reason whatsoever simply send it back to us and we'll cheerfully refund you every cent.

Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.

We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.

Ordering from Shoptimized is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either.

Explore Scientific 68° 28mm Waterproof Eyepiece EPWP6828-01


Product Description

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 62° Series Argon-Purged Waterproof extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. The visual effect of these eyepieces with their long eye-relief and their 68° apparent field is truly a full-immersion experience. The 62° Series eyepieces are parfocal (meaning they focus at near the same point regardless of the focal length you select) and 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.

Protection from the Outdoors - By making the eyepiece body Argon-purged, the waterproof eyepiece 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. 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.

Product Specifications

Item Number EPWP6828–01 EPWP6834–01 EPWP6840–01
Focal Length 28mm 34mm 40mm
Length 91.4mm 100.8mm 114.2mm
Width 61.3mm 69.6mm 80.3mm
Weight 16.1oz; 458g 24.1oz; 685g 35.2oz; 998g
Barrel Size 2.00" 2.00" 2.00"
Eye Relief 21.6mm 26.4mm 31mm
Field Stop Diameter 31.8mm 38.6mm 45.5mm

Warranty 

One Year Warranty

CA Residents: Prop 65 Warning(s) 
Shipping
Scope Department FREE SHIPPING on all orders delivered within the contiguous United States. If your order is in stock and we process the charges to your credit card, our goal is to ship your order out within the timeframe specified on the product page. This is located near the top of the product page below the product price. If we foresee potential delays beyond this shipping window, we will reach out to you directly to inform you. If for some reason you have not received your shipment within a reasonable timeframe or have not heard from us, feel free to reach out at info@scopedepartment.com Expedited shipping is available for an additional cost on some products. Give us a call at 833-7scope or email us at info@scopedepartment.com and we will get back to you as soon as possible with a quote. Orders shipped to Alaska and Hawaii will incur freight charges and the shipping fees for those deliveries are the responsibility of the customer. Shipping charges are calculated after the order is submitted, so your order will be placed on hold until we can reach you by phone to confirm pricing   
Delivery

Estimated between  and

Will usually ship within 1 business day.

   

Please allow 10 days for your order to arrive. We source products from all over the world to bring you epic offers and the lowest prices. This means sometimes you have to wait a little longer to get your order but it's always worth it!

Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

Here are 5 more great reasons to buy from us:

   

We Put Our Customers First to us. If it doesn't fit, it breaks, you've changed your mind or for no reason whatsoever simply send it back to us and we'll cheerfully refund you every cent.

Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.

We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.

Ordering from Shoptimized is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either.

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