Orion 51463 User Manual

®
Orion Astro-Binoculars  
#51463 15x70 model, #52179 20x70 model,  
#51464 20x80 model  
Tripod  
mounting  
post  
Congratulations on your purchase of a pair of quality Orion Astro-  
Binoculars. The 70mm and 80mm Astro-Binoculars provide the  
large light grasp you need for astronomical observation, and  
unlike a telescope, allow you to use both eyes simultaneously for  
nighttime or daytime viewing. This results in better image reso-  
lution, contrast, and brightness than a similar sized telescope  
can provide. Coupled with their wide fields of view, the Astro-  
Binoculars will make you feel like you’re floating in space!  
Brace rod  
0x70  
Please take the time to read this instruction sheet before using  
your new binoculars.  
Using Binoculars with a Photo Tripod  
When observing with large-aperture binoculars like these, a photo  
tripod or some other type of binocular mount is recommended.  
This is because the weight and high magnification of the binocu-  
lars make it difficult to hold them steady by hand.  
The Orion 15x70 and 20x70 binoculars can be attached to a stan-  
dard photo tripod by means of the included L-Bracket. Simply  
unscrew the cap covering the socket behind the focusing knob  
(Figure 1) and thread the L-Bracket into the ¼"-20 hole.  
Tripod Socket  
The 20x80 model features a mounting post (Figure 1) which  
attaches directly to the photo-tripod without needing an L-Bracket.  
Simply thread the ¼"-20 stud of your tripod into the threaded  
socket on the underside of the mounting post. The tripod mount-  
ing post can be positioned anywhere along the brace rod to opti-  
mize balance.To do this, first loosen the large knurled knob on top  
of the post (Figure 1). Then, grip the binoculars and move them  
forward or backwards relative to the post until the balance seems  
about right. Re-tighten the knurled knob on the post when done.  
5x70  
Figure 1. The 15x70, 20x70, and 20x80 Astro-Binoculars.  
Focusing  
The brace rod allows positioning of the binoculars relative to the  
tripod mounting post, but also provides additional stability for the  
binocular barrels. This helps maintain structural rigidity and opti-  
cal alignment for the larger 80mm lens.  
The Orion Astro-Binoculars feature a convenient center focus-  
ing knob. However, because your eyes may differ slightly in their  
focus, the binoculars also includes a right eye diopter adjustment.  
Once the right eyepiece has been adjusted, you can focus the  
binocular entirely with the center focusing knob.  
Adjusting the Distance Between Your Eyes  
(Interpupillary Distance)  
Hold each barrel firmly and move them together or apart so the  
distance between the eyepieces matches the distance between  
your eyes. When properly adjusted, you should see a single,  
round field of view when looking through the binoculars. Make this  
adjustment before you focus the binoculars.  
With both eyes open, sight on a distant object (a tree, building, or  
star). Now cover the right objective (front) lens with your hand or  
the cap. Turn the center focusing knob until the image in the left  
eyepiece is sharp. Now cover the left objective lens and focus the  
right side by rotating the right eyepiece (do not adjust the cen-  
ter focusing knob) until the image is sharp. The binocular is now  
focused for your eyes. Make a note of the diopter setting so you  
can return to it quickly in the future. With the right eyepiece now  
set, all focusing is achieved by rotating the center knob.  
WARNING Never look directly at the Sun through  
your binoculars without professionally made  
solar filters, even for an instant, or permanent eye  
damage could result.Young children should use  
these binoculars on sunny days only with adult  
supervision.  
For astronomical observation, all objects will always appear  
focused at the infinity focus point. This means you only need to  
focus the binoculars once per observing session.  
Since everyone’s eyes focus images slightly differently, different  
observers will need to refocus the binoculars for their own vision.  
OrionTelescopes.com  
Customer Support (800) 676-1343  
Corporate Offices (831) 763-7000  
89 Hangar Way, Watsonville, CA 95076  
Providing Exceptional Consumer Optical Products Since 1975  
IN 414 Rev A 03/11  

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