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Instruction Manual for BT-ED70S-A Binocular Telescope

WARNING!

SPECIFICATIONS

COMPONENTS

BT-ED70S-A Shown with the Fork Mount,

Tripod and other Optional Accessories available separately

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.

Thank you for your purchase of a Vixen BT-ED70S-A Binocular Telescope. This manual applies to the BT-ED70S-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

*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 are included if you purchase a complete package consisting of the BT-ED70S-A, HF2 Altazimuth Fork Mount and SXG-HAL130 tripod.

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 dan-

ger from swallowing or suffocation.

The specifications are subject to change without notice.

About eyepieces applicable to BT-ED70S-A

The removable eyepieces can be swapped for other Vixen NLV or LVW 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.

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.

CAUTION

HANDLING • STORAGE

Objective lensED Apochromatic

Optical coatingMulti coating

Effective aperture70 mm

Focal length (Focal ratio)400mm (F5.7)

Resolving power1.66 arc seconds

Limiting magnitude11.0

Light gathering power100x

Eyepiece holdersFriction fit type

Eyepieces applicable

(Optional)

NLV series of 31.7mm size or LVW series of

31.7mm size

Interpupillary distance58mm to 102mm

Optional Finder scopes7x50mm finder scope & bracket or

X-Y red dot finder

Mount block / ThreadsDovetail bar for SX/GP

Threaded sockets1/4-inch x 2 & 3/8-inch x 1

Size & weight400mm L x 190mm W x 155mm H,

4.0kg (8.81 lbs)

Carry Handle

Objective Cap

BT-ED70S-A

Threaded sockets

for camera tripods

7x50 Finder Scope

(Optional)

XY Finder bracket

(Optional)

Eyepieces

(Optional)

HF2 Fork mount

(Optional)

Swing Bracket

(Optional)

SXG-HAL130 Tripod (Optional)

Eyepiece Holders

Friction Fit

Focus Ring

45-degree Angled

Dovetail Bar

Prism Housing

Finder-bracket Shoe

Optical Tube

Dew Shield

Objective Lens

(inside)

Product specificaties