Orion BinoViewer 52045 User manual

Orion®Premium Linear
BinoViewer for Telescopes
#52045
INSTRUCTION MANUAL
Congratulations on your purchase of the Orion Premium Linear BinoViewer. This
innovative binoviewer will work on any telescope with a 1.25" focuser or acces-
sory adapter, and does not require additional inward focus travel. Please review
these instructions before using the BinoViewer for the rst time. If you run into any
problems, contact Orion Customer Support at 800-676-1343 or by email at www.
OrionTelescopes.com/contactus.
IN 608 12/17
WARNING: Never look directly at the Sun through your telescope—
even for an instant—without a professionally made solar lter that
completely covers the front of the instrument, or permanent eye
damage could result. Young children should use this telescope only
with adult supervision.
Orion®Telescopes & Binoculars
Corporate Offices: 89 Hangar Way, Watsonville CA 95076 - USA
Customer Support: www.OrionTelescopes.com/contactus
Copyright © 2018 Orion Telescopes & Binoculars
All Rights Reserved. No part of this product instruction or any of its contents may be reproduced,
copied, modified or adapted, without the prior written consent of Orion Telescopes & Binoculars.

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Installing and Using the Premium Linear BinoViewer
1. Remove the caps on the eyepiece collars (A) and barrel (F) before using the
BinoViewer.
2. Attach the BinoViewer to the telescope.
Before inserting the BinoViewer into the focuser, make sure any adapters or diag-
onal in the focuser drawtube are tightly in place.The BinoViewer weighs much
more than an average eyepiece, therefore all connections must be extra secure
to support it.
For Refractor or Cassegrain telescopes:
Install a diagonal.Your choice of diagonal will determine the image orientation
you see; see the table below. Then insert the 1.25" barrel (F) of the BinoViewer
into the diagonal and secure it tightly with the thumbscrew(s) on the diagonal.
For terrestrial viewing a normal, upright image is desired, so it is best to use
the Orion Pentaprism 90° Diagonal (#52055), which is sold separately. For
astronomical viewing, a correctly oriented image is not necessarily needed
since there is no “right side up” in space. But if you’re referring to a star chart
when observing, it can be inconvenient or confusing if the image seen in the
telescope is rotated or mirror-reversed. In that case, too, use of the Pentaprism
diagonal may be benecial.
Figure 1.
Left Right
A
B
C
D
E
F

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For Newtonian Reflector telescopes:
Insert barrel of the BinoViewer into the focuser or extension tube of Newtonian
telescope directly. Once the eyepieces are installed, the image seen will be
upright and non-reversed.
3. Installing Eyepieces
Insert two identical 1.25" eyepieces (sold separately) into the left and right
eyepiece holders of the BinoViewer (B). Then rotate the twist-tight collars (A)
clockwise to secure the eyepieces in place.
4. Focusing
1) Cover or close you right eye and look into the left eyepiece with your left
eye. Adjust the focus of your telescope using the telescope’s focusing knob
until you get a sharp image. You can then lock the focuser on the telescope if
desired.
2) Now close or cover your left eye and look into the right eyepiece with your
right eye. Check if the image you see is clear and sharp. If it is, you can skip
to step 5. If the image is blurry, rotate the BinoViewer’s diopter focusing ring
(C) – not the telescope’s focuser – until the right image is sharp.
Now the image in both eyepieces should appear sharply focused. From here
on, to adjust the focus while observing you should use the telescope’s focus-
ing knob(s).
5. Adjusting the Interpupillary Distance
The two halves of the Premium Linear BinoViewer can be moved inward or
outward (i.e., linearly) to accommodate the distance between your two eyes,
or the “interpupillary distance”. While looking into the eyepieces with both eyes,
grasp both sides of the BinoViewer housing (E) and push inward or pull out-
ward until the two single images merge into one. Once you’ve done that, note
the number on the IPD (interpupillary distance) scale (D), which ranges from
58mm to 74mm. Then you can quickly set it to the same IPD next time you use
the BinoViewer.
Using Filters
The Premium Linear BinoViewer’s barrel (F) is threaded to accept Orion 1.25" l-
ters. Simply thread the lter clockwise into the end of the barrel and re-focus. The
BinoViewer’s excellent lunar and planetary views can be further enhanced by color
lters such as light blue, yellow, or red, and a Moon lter will block excessive glare.
Diagonal Type Image
Non-inverting diagonal, such as
Orion Pentaprism 90° Diagonal
“Normal” upright image
Mirror star diagonal Upside down and non-reversed
“Correct-image” diagonal Upside down and mirror reversed

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One-Year Limited Warranty
This Orion product is warranted against defects in materials or workmanship for
a period of one year from the date of purchase. This warranty is for the benet of
the original retail purchaser only. During this warranty period Orion Telescopes &
Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves
to be defective, provided it is returned postage paid. Proof of purchase (such as a copy
of the original receipt) is required. This warranty is only valid in the country of purchase.
This warranty does not apply if, in Orion’s judgment, the instrument has been abused,
mishandled, or modied, nor does it apply to normal wear and tear. This warranty gives
you specic legal rights. It is not intended to remove or restrict your other legal rights
under applicable local consumer law; your state or national statutory consumer rights
governing the sale of consumer goods remain fully applicable.
For further warranty information, please visit www.OrionTelescopes.com/warranty.
Storage
Although your BinoViewer is durable, avoid prolonged, unnecessary exposure to
the elements. Keep the BinoViewer in its waterproof case, with caps on when not
in use. When bringing the BinoViewer indoors after using it, condensation could
form on the unit, so it is recommended to leave the BinoViewer in a dry place with
caps off and case open overnight to let it dry out completely. Store the BinoViewer
indoors or in a dry garage; storage in a humid environment may result in mold
growth on the optical surfaces that can destroy optical coatings. This is not covered
by the warranty.
Other Information about the Orion Premium Linear BinoViewer.
• The Premium Linear BinoViewer does not change the magnication provid-
ed by an eyepiece compared to its use without the BinoViewer.
• The Premium Linear BinoViewer has a zero backfocus requirement. Most
binoviewers on the market require 100mm or more of backfocus, making them
impossible to use with many telescopes, particularly Newtonian reectors
which typically have a short backfocus.
• The Orion Premium Linear BinoViewer has an integrated image-erecting
lens system. This means that if used directly, or “straight through”, in a refractor
or Cassegrain telescope without a diagonal, the image will appear “normal.”