Vixen BT126SS-A User manual

Instruction Manual for BT126SS-A Binocular Telescope
Thank you for your purchase of a Vixen BT126SS-A Binocular Telescope. This manual applies to the BT126SS-A Binocular Telescope.
Be sure to read instructions for the mount and tripod along with this manual if you purchased the product as a complete package.
WARNING!
SPECIFICATIONS
COMPONENTS GUIDE
Never look directly at the sun with your naked eyes or through this product or its
finder scope available. Permanent and irreversible eye damage may result.
Do not leave the product uncapped in daytime. It may cause passing
sunlight through the objective lens of the optical tube, resulting in fire.
Do not use the product while transporting or walking, as injuries may
arise from stumbling, falling or collision with objects.
Keep plastic and vinyl packing materials away from children; these may
cause danger from swallowing or suffocation.
CAUTION HANDLING・STORAGE
BT126SS-A Shown with the Fork Mount,
Tripod and other Optional Accessories available separately
* For observing, two 31.7mm (1.25-inch) eyepieces of the same focal length are required as they are not included.
* A pair of the eyepieces may be included if you purchase a complete package consisting of the BT126SS-A, HF2 Altazimuth Fork Mount and SXG-HAL130 tripod.
Objective lens
Optical coating
Effective aperture
Focal length (Focal ratio)
Resolving power
Limiting magnitude
Light gathering power
Eyepiece holders
Eyepieces applicable
(Optional)
Interpupillary distance
Optional Finder scopes
Mount block / Threads
Threaded tripod sockets
Size & weight
Air-spaced doublet achromatic
Multi coating
126mm
625mm (F5)
0.92 arc seconds
12.3
324x
Push fit type
SLV series of 31.7mm size or LVW series of
31.7mm size or SSW series of 31.7mm size
58mm to 102mm
7x50mm finder scope & bracket or X-Y
red dot finder
Dovetail bar
1/4-inch x 2 & 3/8-inch x 1
630mm L x 360mm W x 200mm H, 10.5kg (23.1bs)
Carry Handle
Optical Tube
Dew Shield
Objective Lens
(inside)
Eyepiece Holders(Pish fit)
Focus Ring
Prism Housing
45-degree Angled
Lock screw
Finder-bracket Shoe
Trunnion
Tripod Sockets(Bottom)
Do not leave the product inside a car in bright sunshine, or in hot places. Keep any
strong heat radiation sources away from the product.
Do not exposure the product to rain, water drops, dirt or sand.
When cleaning, do not use solvent such as paint thinners.
Avoid touching any lens surfaces directly with fingers. If a lens becomes dirty with
fingerprints or general smears, gently wipe it using a commercially available lens
leaner and a lens cleaning paper, or consult your local Vixen dealer.
For storage, keep the product in dry places, and do not expose to direct sunlight.
SXG-HAL130 Tripod(Optional)
BT126SS-A
Threded sockets
for camera tripod
HF2 Fork mount
(Optional)
7x50 Finder Scope
(Optional)
XY Finder bracket
(Optional)
Eyepieces
(Optional)
Objective Cap
The specifications are subject to change without notice.
About eyepieces applicable to BT126SS-A
The removable eyepieces can be swapped for other Vixen SLV or LVW or SSW series of 31.7mm-size eyepieces, but if the eyepieces with high
magnification are used, it may give rise to misalignment that becomes detectable due to its high magnification. It is always recommendable to use
the eyepieces with focal length longer than 10mm for observing to avoid it.

USING YOUR BT126SS-A BINOCULAR TELESCOPE
ALIGNMENT
1The BT126SS-A has threaded sockets of 1/4”-20 and a
3/8” on the bottom of the bridge block for a camera
tripod.
3While looking through the right side eyepiece, turn the
focus ring on the right side prism housing until the image
appears in sharp focus. Next, look through the left side
eyepiece and adjust the focus of the left side eyepiece in
the same way by turning the left side focus ring.
2
Attach the eyepieces so that the chrome barrel of the eyepiece
is push into the eyepiece holder entrely. When you exchange
the eyepieces, you should align the optical axis of left side and
right side eyepieces in the procedure stated in ALIGNMEMT.
4
Adjust the interpupillary width to your eyes. Hold the left and
right side prism housings with both hands and rotate them
inward equally so that the both eyepieces come to a position
that fits your eyes. It is a point that circles of field of view in the
left and right eyepieces become one completely.
How to Adjust a Double Vision
1Look through the left side eyepiece and find an object
further than 1,000m distant. Put the object in the field of
view so that it lies on the imaginary horizontal center line of
the field of view, and shift it to the very right edge. An
electric pole is shown here as a sample.
The object near the edge of the field of view makes your
recognition of a position of the object against the field of
view circle easier.
If the object is seen at the same level and position on the
right side eyepiece as seen with the left side eyepiece, it
shows that the eyepieces are aligned correctly.
If not, rotate the right side eyepiece slowly clockwise or
counterclockwise until the object moves toward the same position.
2
If the above does not align the optics correctly, then rotate
the right side eyepiece slowly while keeping the right side
eyepiece as it is.
TIPS ON GENRAL OBSERVATION WITH BT126SS-A
The object can be seen more clear and brighter at low
magnification. It is desirable to start with a pair of eyepieces with low magnification and exchange them for eyepieces with
medium magnification. It will be hard to align the optical axis at high magnification due to the structure of binocular telescopes.
It is advisable to use with the Vixen NLV or LVW eyepieces with focal length longer than 10mm at high magnification.
It may be possible that a double vision occurs from the character of binoculars when you attach the eyepieces without
a consideration for optical alignment. In this case, make adjustments of the optical axis in the following procedure.
1left
Right
Right
left
1 2
3 4
2
1/4”-20
3/8”
Right side
prism housing
Left side
prism housing
Eyepieces
(Optional)
Camera tripod
Left side focus ring
1/4”-20
3/8”
Right side
prism housing
Left side
prism housing
Eyepieces
(Optional)
Camera tripod
Left side focus ring
Right side focus ring
Right side focus ring
Imaginary horizontal center line
Shift the object to the very right edge
63キ-3-0.05S-50-(DC1450GA)(M)(K)
5-17-3 Higashitokorozawa,Tokorozawa,Saitama359-0021, Japan
Phone [phone](International)
F a x+81-4-2944-9722(International)
http://www.vixen.co.jp