Premium Binoculars for Astronomical Viewing

10.5 X 70 Premium Binoculars (PB105X70)
15 X 70 Premium Binoculars (PB15X70)

"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.

These 70 mm binoculars come in two powers, 10.5x and 15x. The difference is simply that the eyepieces are of different powers. How to choose is the question. If your preference is to do more sweeping of the skies or daytime vistas while hand holding, we would recommend the 10.5x. The 15x binos definitely should be held on a tripod. The exit pupil on the 10.5x will be 6.7 mm, while the 15x has a 4.7 mm exit pupil. The smaller exit pupil of the 15x will be a better match for older eyes which do not open up to the larger diameter of the 10.5x version. The 15x power also will have a small advantage to the faintest magnitude star that can be seen. Eyeglass wearers note: both binoculars have fold down rubber eye cups and can be used with glasses, although some people may not be able to see the full field in the 15x model."

Roland Christen
July, 2006

Each Premium Binocular includes:

  • Your choice of 10.5x or 15x power binocular
  • Caps for the eyepieces and objectives
  • Heavy-duty strap
  • Sturdy lined case with locks and two keys
  • Cleaning cloth (We recommend you use the Astro-Physics Optical Cleaning System for all optics.)
  • Heavy-duty Tripod Adapter - metal casting construction with a rubber insert on the base, which prevents it from shifting on your tripod. You don't pay extra for this rugged adapter!


  • High light-transmission, fully-illuminated exit pupil
  • Waterproof and shockproof - built to military standards
  • Nitrogen purged
  • All-metal construction with rubber-armored covering
  • High-quality eyepieces with sharp fields-of-view
  • Precise focuser for each eyepiece
  • Excellent contrast and definition for nighttime deep-sky viewing
  • ¼-20 thread to attach tripod adapter
  • High value for the price


10.5 X 70mm (PB105X70)
15 X 70mm (PB15X70)
10.5 X
15 X
70 mm
70 mm
Apparent field of view :
52 degrees
66 degrees
Actual field of view - deg.:
5 degrees
4.4 degrees
Field of view (width X dist):
87 ft. @ 1,000 ft.
77 ft. @ 1,000 ft.
Exit Pupil :
6.7 mm
4.7 mm
Eye Relief:
25 mm
18 mm
Interpupillary Range
56.5 mm - 75 mm
56.5 mm - 75 mm
Optical coatings:
Every surface fully multi-coated with modern high-contrast multi-layers (HC-ML)
Barium Crown (BAK4) prisms for full illumination
2.5 kg, 5.6 lb.
2.5 kg, 5.6 lb.


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 always want the Astro-Physics name to ensure that you are happy!

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.


Remember: Our prices INCLUDE insured standard ground shipping to U.S. customers in the 48 contiguous states!

PB105X70$399.00 Call Contact Astro-Physics about PB105X70

PB15X70$399.00 Call Contact Astro-Physics about PB15X70

Specifications subject to change without notice.

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Copyright © 2012 Astro-Physics Inc. All rights reserved.
Last modified: April 30, 2012

Astro-Physics, Inc.
11250 Forest Hills Road, Machesney Park, IL  61115, U.S.A.
Phone: 815-282-1513   Fax: 815-282-9847