Premium Binoculars for Astronomical Viewing
11 X 70 Premium Binoculars - PB11X70
16 X 70 Premium Binoculars - PB16X70
Each Premium Binocular includes
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Features
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11 X
70mm (PB11X70) |
16 X 70mm
(PB16X70) |
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Magnification | 11 X |
16 X |
Aperture | 70 mm |
70 mm |
Exit Pupil | 6.4 mm |
4.4 mm |
Twilight Factor | 27.7 |
33.5 |
Flattener Eyepiece Design (#Elements/#Groups) | 5E / 4G |
8E / 5G |
Apparent field of view | 52.8 degrees |
65.6 degrees |
Actual field of view - deg. | 4.8 degrees |
4.1 degrees |
Field of view at 1000 yds | 252 ft. @ 1000 yds |
216 ft. @ 1000 ft. |
Field of view at 1000m | 84m @ 1000m |
72m @ 1000m |
Eye Relief | 23mm |
20mm |
Minimum Focus Distance | <=20m |
<=24m |
Light Transmission | >=90% |
>=90% |
Optical coatings | Every surface fully multi-coated with modern high-contrast multi-layers (HC-ML) |
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Porro Prism: | Barium Crown (BAK4) prisms for full illumination |
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Interpupillary Range | 56mm - 74mm |
56mm - 74mm |
Positive Ocular Diopter Adjustment | +6 |
+10 |
Negataive Ocular Diopter Adjustment | -6 |
-10 |
Water Resistance / Proof | 1m Water Depth / 30 min |
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Weight: | 2.40 kg, 5.3 lb. |
2.44 kg, 5.4 lb. |
Choosing Your Binocular
These 70 mm binoculars come in two powers, 11x and 16x. If your preference is to do more sweeping of the skies or daytime vistas while hand holding, we would recommend the 11x, though a tripod is advised for extended viewing. The 16x binos definitely should be held on a tripod. The exit pupil on the 11x is 6.4 mm, while the 16x has a 4.4 mm exit pupil.Quality Assurance and Warranty
Our goal at Astro-Physics has always been the complete satisfaction of our loyal customers. To that end, each and every binocular is inspected and tested before being shipped. Each Premium Binocular should provide many years of flawless service with reasonable care. Should your binoculars ever become damaged by accident or misadventure, repair service is an available option.
We warrant to the original purchaser that each pair of our Premium Binoculars will be free from all defects in materials and/or workmanship for a period of one year from the date of purchase. During that year, we will either repair or replace (at our sole discretion) any properly, cared-for unit with defects that are not the result of negligence, mishandling or abuse.
Accessories
Remember: Our prices INCLUDE insured standard ground shipping to U.S. customers in the 48 contiguous states!
11x70 Premium Binoculars16x70 Premium Binoculars
11x70 Premium Binoculars with two Baader Planetarium AstroSolar Binocular Filters (ASBF-70) for Solar Viewing
16x70 Premium Binoculars with two Baader Planetarium AstroSolar Binocular Filters (ASBF-70) for Solar Viewing
Specifications subject to change without notice.
Roland Christen's Binocular Review
Roland's comments about the previous version of these binoculars. As noted above the newer, current version provides a flatter field, are sharper at the edges and color fringing is reduced. :"For years, I have been searching for the perfect binocular companion to my telescopes. A binocular which would be of a nice size to hand hold for wide-field sweeps of the night-sky, as well as for birds and wildlife and for long distance daytime views of mountain and ocean vistas.
Almost all inexpensive binoculars that I have tested have had too many compromises in their performance for my personal needs. I was made aware of a small company that specializes in high-quality military binoculars, and had them send me a modified set (without the military reticle) to see if this would satisfy my particularly picky requirements. I was quite surprised and delighted that finally here was a binocular that did not cut any corners in its construction, quality of materials used, or in the design of the optics, at a price that was quite reasonable to boot. After having personally tested the performance of these binoculars on the night sky, I am convinced that they are just the ticket for the amateur who wants something better than the typical run-of-the-mill commodity binocular.
To give you an idea of how well they work, I was able to easily see the stars of the Pleiades cluster before sunset while the sun was still above the horizon. The contrast was exceptional, showing all the members of this cluster as tiny pinpoints against a dark blue background. Cruising down the Milky Way under dark skies revealed countless stars, open clusters, globulars and other deep sky wonders. Even the faint members of the Leo Galaxy cluster show up nicely in both the 10.5x and 15x versions.
These binoculars feature high-tech multi-coatings on all lens and prism surfaces for highest possible light transmission and image contrast. All optical surfaces are manufactured to a high level of polish and accuracy to insure sharp images under all observing conditions. The use of oversize prisms insures excellent light throughput to the edges of the field-of-view. All-metal construction makes these binoculars rugged and stable, yet the rubber-armored covering makes them comfortable in your hands. They will not lose collimation over time or with rough handling. They are nitrogen-purged and waterproof and will not fog over internally, nor will the coatings on the internal optical surfaces degrade with time under any conditions.
We have shown these binoculars to various advanced amateurs who know good optics when they see them. Even the most knowledgeable and discriminating individuals were impressed by the sharpness and inherent brightness of these binoculars. They are fully equal to big-name premium brands sold at much higher prices. These binoculars are made to Astro-Physics’ specifications and performance requirements and we inspect each binocular to assure that these standards are met. " Roland Christen, July 2006
Copyright © 2016-2017, Astro-Physics, Inc.
- All Rights Reserved
This page was last modified:
December 21, 2017
Astro-Physics,
Inc.
11250 Forest Hills Road, Machesney Park, IL 61115, U.S.A.
Phone: 815-282-1513 Fax: 815-282-9847