SKU: 38346887155

Explore Scientific 72° ED Series 8.5mm Waterproof Eyepiece

Sale price$134.55 Regular price$149.50
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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

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Description

Explore Scientific 72° ED Series 8.5mm Waterproof EyepiecePlssl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72 ED Series 8. 5mm Waterproof Eyepiece is a genuine HOYA FCD1 extra low dispersion glass eyepiece with a 72 apparent field of view, waterproof argon purged construction, and long eye relief a meaningful optical upgrade

Plössl and Kellner eyepieces shipped with most telescopes get the job done, but they leave performance on the table — narrow apparent fields, limited eye relief, and visible chromatic aberration at the field edge. The Explore Scientific 72° ED Series 8.5mm Waterproof Eyepiece is a genuine HOYA FCD1 extra-low dispersion glass eyepiece with a 72° apparent field of view, waterproof argon-purged construction, and long eye relief — a meaningful optical upgrade that transforms what you see through your telescope.

The FCD1 ED glass sharply reduces chromatic aberration compared to standard eyepiece designs, producing cleaner star points and higher contrast across the field. The 72° apparent field of view is wide enough to create a panoramic, immersive viewing experience without the weight and expense of ultra-wide designs. Argon purging prevents internal fogging in humid conditions, and the waterproof housing means dew-soaked nights won't damage the optics.


Key Features
  • HOYA FCD1 extra-low dispersion glass — reduced chromatic aberration for sharper, higher-contrast views
  • 72° apparent field of view — immersive wide-field viewing without tunnel vision
  • Waterproof and argon-purged — sealed against moisture, fog-proof in all conditions
  • Long eye relief — comfortable extended viewing for both eyeglass wearers and unaided observers
  • 1.25" barrel — standard format compatible with most telescope focusers
  • Enhanced multi-layer deposition coatings on all air-to-glass surfaces for maximum light transmission

Ideal For

High-magnification planetary observation with slightly more field than shorter focal lengths. An excellent upgrade from stock Plössl eyepieces for observers who want wider fields, better eye relief, and the optical clarity that ED glass provides. Compatible with any telescope accepting 1.25" eyepieces.

Shipping Notes
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  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 38346887155

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4.8 ★★★★★
Based on 8 reviews
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D
Verified Purchase
Dennis
San Leandro, US
★★★★★ 1
Tiny mop
Size: Small (12.00"), Size: Small (12.00")
It only lasted about 30 minutes with my medium size English cream retriever now it looks like a tiny mop, completely shredded a waste of money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
M
Verified Purchase
Michael G.
New York, US
★★★★★ 5
Price is right for a dog that chews other toys up fast`
Size: Small (12.00")
Good inexpensive toy for aggressive chewer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
G
Verified Purchase
GARY W GILBERT
Pawtucket, US
★★★★★ 3
DOG TUG OF WAR ROPE
Size: Medium (23.60")
A little too short, but very tuff tough the ends unravel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 9, 2025
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 1
A real review.
Color: 2PC, Color: 2PC
When I saw the Unbreakable Teddy Extreme Bear 2.0, I thought, Finally! A toy that might survive my 9-month-old Rottweiler puppy, Pepper. She’s an aggressive chewer with a love for stuffies—she adores them, right up until she disembowels them and feasts on their cotton insides like a tiny, unhinged zombie. The toy’s name, "Unbreakabear," sounded promising. Durable? Stuffie-like? For large breeds? Sign me up! Fifteen minutes later, it looked like a crime scene from a horror movie. The Good: Pepper was IN LOVE with this toy... for about 10 minutes. The double pack is nice in theory—you know, so you have a backup when the first one inevitably doesn’t live up to its "unbreakable" promise. The Bad: False Advertising: This toy is marketed as "extremely durable for aggressive chewers." But let me tell you: Pepper’s chewing isn’t aggressive—it’s surgical. She shredded the bear’s ears, ripped off the tail, and then went straight for the brain like she was auditioning for Zombie Dogs Gone Wild. It didn’t even put up a fight. Durability (or Lack Thereof): Calling this toy "extreme" is like calling a paper towel roll a chew toy. One good shake, and the seams basically exploded in surrender. Safety Concerns: Once Pepper exposed the stuffing (and the metaphorical "brains"), it was a race to see if I could stop her from swallowing it. Stuffing everywhere. The floor looked like someone had murdered a carnival bear. The Ugly: Walking into the room after Pepper was done was like stumbling upon the aftermath of a teddy bear massacre. The "Unbreakabear" lay limp on the floor, its ears and tail missing, stuffing spewed around like it was the victim of a bear-sized horror flick. Pepper, triumphant, sat there with bits of fluff clinging to her mouth, looking like a deranged extra from The Walking Dead. Final Thoughts: If your dog is a light chewer who likes to gently cuddle their toys, this might be fine. But if your dog sees toys as a challenge, run. Stick to hard rubber toys, Kongs, or something without a vulnerable, squishy middle. As for the warranty? Sure, I could try to get a replacement, but what’s the point? Pepper will just go full zombie surgeon again. Would I recommend this toy? Only if you’re filming a sequel to Teddy Bear Massacre. For aggressive chewers, this is nothing but fluff and disappointment. Pepper’s Review: 5/5 stars for taste. 0/5 stars for durability.
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Reviewed in the United States on January 15, 2025
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 1
Toy does not live up to its name
Color: 1PC
This product is not sturdy enough for an aggressive chewer as it is advertised. It took my 7-year-old "Rottie" approximately 15-20 minutes to have this "unbreakable, in destructive aggressive chewer" toy rip open and stuffing everywhere. A complete waste of money and I would not recommend this toy to anyone with an aggressive chewer.
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Reviewed in the United States on April 19, 2026

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