The NEPTUNE™ series extend Zen-Ray’s expertise in the high quality waterproof binoculars. They are heavy-duty rated giant binoculars. We understand the need of backyard astronomers, who crave for nothing but high quality optics to spend a mesmerizing night gazing through the galaxy we reside in and beyond. From start to finish, we meticulously manufacture and inspect every piece of equipment to our highest quality standard. Protected by attractive rubber armoring, CNC-machined all metal construction is guaranteed to last for many years to come. The optical quality never fail to impress everyone who has the privilege to experience it (or own it). What a truly excellent instruments it is for astronomical and wildlife observation!
Featured with fully broadband multi-coated optics and BAK4 prisms, NEPTUNE presents a bright, sharp, closer universe to you. Smooth, CNC-machined individual focusers provide the precision focusing essential for maximum performance on astronomical targets. Collimation can be adjusted by experienced users, if necessary. Each binocular is covered by our two-year warranty and 30-day return policy. As a proud owner of NEPTUNE™ Waterproof binocular, you will receive a deluxe heavy-duty carrying case with durable PVC armoring and aluminum trim. The cases are lined with soft, "egg-crate"-style foam for maximum protection.
We perform our signature 16-point inspection, including collimation individually before we ship the binoculars to our customers. Your 100% satisfaction is our commitment to customer service.
Comparison Chart of Neptune Product Line
MODEL | NEPTUNE 20X80 CF (Triplet, Waterproof) | NEPTUNE 20x90 IF (Waterproof) | NEPTUNE 25X100 IF (Waterproof) |
OBJECTIVE LENSES | 80mm f/4.1; 3 Elements, 2 Groups | 90mm f/4.1; 2 Elements, 2 Groups | 100mm f/4.5; 2 Elements, 2 Groups |
EYEPIECES | 4 Elements, 3 Groups | 4 Elements, 3 Groups | 4 Elements, 3 Groups |
MAGNIFICATION | 20x | 20x | 25x |
EYE RELIEF | 15mm useable (18mm total) | 15mm useable (18mm total) | 15mm useable (18mm total) |
EXIT PUPIL | 4.0mm | 4.5mm | 4.0mm |
APPARENT FIELD OF VIEW | 58º | 58º | 60º |
TRUE FIELD OF VIEW | 3.2 º (167 ft./1000 yds.) | 3.2 º (167 ft./1000 yds.) | 2.5 º (131 ft./1000 yds.) |
WEIGHT | 7 lbs., 3 oz. | 8 lbs., 7 oz. | 10 lbs., 2 oz. |
CLOSE FOCUS | 25m | 25m | 35m |
IPD RANGE | 60.5-74mm | 60.5-74mm | 61-73mm |
COATINGS | Fully Broadband Multi-Coated | Fully Broadband Multi-Coated | Fully Broadband Multi-Coated |
LIGHT TRANSMISSION | 99.0%-99.7% per surface; >85% total | 99.0%-99.7% per surface; >85% total | 99.0%-99.7% per surface; >85% total |
WARRANTY | 2-year limited warranty | 2-year limited warranty | 2-year limited warranty |
This product was added to our catalog on Friday 31 August, 2007.
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