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Description
3D Astronomy 8x42 Space Walker 3D BinocularLederman Optical Array (LOA) Phase Corrected BAK4 Roof Prisms Dielectric Prism Coatings Fully Multi Coated Optics Wide Angle Viewing: 60 Nitrogen Filled, Water and Fogproof Closed Bridge Configuration Magnesium Alloy Chassis Large Center Focusing Knob Twist Up and Angled Eyecups Built with the proprietary Lederman Optical Array (LOA) to reproduce the true stereoscopic depth of field of human sight, 3D Astronomy 's 8x42 Space Walker 3D Binocular yields
- Lederman Optical Array (LOA)
- Phase-Corrected BAK4 Roof Prisms
- Dielectric Prism Coatings
- Fully Multi-Coated Optics
- Wide-Angle Viewing: 60°
- Nitrogen-Filled, Water and Fogproof
- Closed-Bridge Configuration
- Magnesium Alloy Chassis
- Large Center Focusing Knob
- Twist-Up and Angled Eyecups
Built with the proprietary Lederman Optical Array (LOA) to reproduce the true stereoscopic depth of field of human sight, 3D Astronomy 's 8x42 Space Walker 3D Binocular yields views of the night sky that normal binoculars cannot offer. The LOA duplicates the physiological process that allows humans to see with depth perception and eliminates the flat depth of field common when viewing through binoculars focused at infinity. The LOA is complemented by phase-corrected and dielectric coated BAK4 roof prisms and fully multi-coated optics that work together to improve light transmission throughout the optical path, reduce internal light scattering, and increase color rendition, image clarity, and overall contrast. Rounding out the optical performance is a wide angle of view, long eye relief, and comfortable exit pupil. A pair of removable angled eyecups is provided to block peripheral light and eliminate ambient light interference with your viewing experience.
- Optical Performance
-
- 8x magnification
- 42mm objective lenses
- Compact BAK4 roof prisms
- Phase-correcting prism coatings reduce internal light scattering while aligning light waves to improve contrast and clarity
- Dielectric prism coatings reduce light loss for brighter images
- Fully multi-coated optics reduces light loss and increases color rendition, contrast, and clarity
- Wide 60° apparent angle of view
- 388' field of view at 1000 yards
- Long 17.5mm eye relief
- Wide 5.25mm exit pupil
- Lederman Optical Array
-
- Optical array integrated into one eyepiece
- Duplicates the physiological process that allows humans to see with depth perception
- Eliminates the flat view typical when viewing through binoculars focused at infinity to produce a rich depth of field more like natural human vision
- Produces the angular offset required for true stereoscopic vision no matter how far the field being viewed is located
- Use and Handling
-
- Closed-bridge configuration
- Large knurled center focusing knob
- 54-75mm interpupillary adjustment range
- Right-eye dioptric correction allows for eye prescription
- Twist-up rubber eyecups for comfortable use with or without eyewear
- Removable angled eyecups block stray peripheral light making images clearer and brighter
- Construction Details
-
- Lightweight and strong magnesium alloy chassis
- Slip-resistant protective rubber armoring
- Nitrogen-filled for water and fogproof performance
- Weight: 22 ounces
UPC: 700645823698
| Prism Type | Roof |
| Magnification | 8x |
| Objective Lens Diameter | 42mm |
| Angle of View | 7.5° (actual) |
| Field-of-View | 388.0' @ 1000 yd / 128.8 m @ 1000 m |
| Minimum Focus Distance | 7.0' / 2.13 m |
| Exit Pupil Diameter | 5.25 mm |
| Eye Relief | 17.5 mm |
| Interpupillary Adjustment | 54.0 - 75.0 mm / 2.1 - 3.0" |
| Dioptric Correction | Not Specified By Manufacturer |
| Focus Type | Center |
| Tripod Mount | None |
| Dimensions | 5.8 x 4.8" / 14.73 x 12.19 cm |
| Weight | 22.0 oz / 624 g |
| Packaging Info | |
|---|---|
| Package Weight | 2.05 lb |
| Box Dimensions (LxWxH) | 7.3 x 6.3 x 3.2" |
In the Box
3D Astronomy 8x42 Space Walker 3D Binocular
- Neck Strap
- 2 x Angled Eyecups
- 2 x Ocular Lens Caps
- 2 x Objective Lens Caps
- Carrying Case
- Limited One-Year Warranty
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2403 reviews
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Product Reviews
★★★★★ 5
Great value for the price, highly recommend
Color: Dogwood & Calming, Size: Medium
Our dog loves these and chews them down to nothing. They are a great value for the money and the use your dog gets out of them. The size is just right for our doberdor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 3
Our dog loves it but it wasn’t durable enough to last
Color: Dogwood Jack, Size: Large, Color: Dogwood Jack, Size: Large
Our lab took to it as soon as we gave it to her. Perfect size for our 80 lb yellow lab.
However, now that it’s in about 10 days, she’s able to break off chunks from this bone that are dime size or larger, and we have to throw it away
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Reviewed in the United States on May 1, 2026
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long.
I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
Long lasting and safer alternative to sticks
Color: Dogwood & Calming, Size: Medium
These are great, very durable, and have lasted a very long time. Much safer for my dogs than the random sticks they find in the yard. They do get shorter with chewing eventually, but they don't break off in little chunks like I've seen with some nylon chews, and they don't splinter like wood. Medium size works well for both my 16 lb Cavalier and my 60 lb Pyrenees/Golden mix. They're both moderate-to-aggressive chewers, though size obviously affects how much damage they can do.
I wish you could buy the hemp chew separately because that one is very much a favorite in my house, so after 2 years and 2 purchases, I have barely any left of the remaining hemp chew, but still 2 of the dogwood chews that neither dog is as interested in anymore. I'd love to buy a couple more of just the hemp one.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Your dog will thank you.
Color: Dogwood & Fresh Breath, Size: Large
My dogs loves to chew on these. They make a small mess but not as bad as other chews. They are food for keeping teeth clean.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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