Opticron 50 GA/45 Installation guide

Model
50 GA/45
MM3 Travelscopes
User Instructions and Warranty
North America

AInterchangeable eyepiece
(not included).
BMain focus wheel.
C8:1 fine focus wheel.
DTripod sleeve with +/- 90˚
rotation and large footprint
tripod adapter socket with two
1/4” threads.
EObjective lens.
Features & Specifications
Specifications 50/45
Product Code
Objective (mm)
Close Focus (ft/m)
Length (in/mm)
Weight (oz/g)
41251
50
9.5/2.9
8.1/205
20.7/588
A
B
D
C
E
Integrated rubber objective
lens cover.

Getting Started
Your MM3 travelscope will bring a new dimension to long range observation bringing far away subjects into clear and
sharp focus.
1. To minimize image shake caused by the high magnification, the instrument should be supported using a suitable
tripod or mount.
2. Connect the fieldscope to the tripod or mount using the tripod socket located on the underside of the tripod sleeve.
3. Make sure the eyepiece is attached securely. The retractable rubber eyecup should be used in the down position
when wearing glasses. This ensures the maximum available field of view is obtained. Be sure to return the eyecup
to the up position if you or anybody else wants to view without glasses.
4. To focus, locate the subject in the center of the field of view and rotate the focus wheel until the subject comes
into sharp focus. At high magnifications when depth of focus is shorter use the fine focus adjustment for greater
accuracy.
5. If you are using a variable magnification or zoom eyepiece set the magnification to minimum when trying to
locate your subject, only zooming once the subject is centered. With some eyepieces a small amount of refocusing
may be required as the zoom is adjusted.
WARNING. Never under any circumstances use a fieldscope to view the sun. Doing so will cause serious damage to
your eyes.
Eyepieces
Eyepieces • SDLv3 • HDF • HR
Product Code
Magnification
Eye Relief (mm)
41270M
12-36x
20-18
40810M
13xWW
22
40831M
18xWW
16
40862M
12-36x
22-17
41145M
13-39x
20-16

Waterproof Cases
Care & Cleaning
Stay-on-the-Scope Waterproof in Black
Water resistant multi-layer padded cases individually
designed to fit each model. Protects instrument while
fitted to a tripod and in use. Includes removable end
caps and adjustable carry strap.
Stay-on-the-Scope Waterproof in Green
As black models but supplied with a fully adjustable
neoprene carry strap for extra comfort.
To clean outer glass surface of the eyepiece and objective lens, gently remove excess dirt and dust using a
compressed air device or blower brush. Caution. Hard and persistent rubbing of dirty surfaces can cause abrasive
scratches on the surface of the glass which may distort viewing. Breathe on exposed glass surface and then wipe
with an optical cleaning cloth (code 30277) in a circular motion until the surface is clean again. Do not attempt to
dismantle the instrument as this will invalidate the warranty.
Whenever possible store in a stable dry atmosphere away from moisture. For extra protection, use the gift box or one
of the optional cases available.

Telephotography and digiscoping is easy to enjoy using Opticron fieldscopes in combination with a range of
imaging devices. If you are thinking about taking photos and video through your fieldscope we currently offer the
following options:
1. Telephotography with an SLR, DSLR or compact system camera
In this system the camera lens is substituted for the telescope +
telephotoadapter or telescope + eyepiece + photoadapter. To convert
MM3 50 models to a 530mm1/f.10.6 telephoto lens you will need
a 40215 telephotoadapter. Alternatively connect a suitable push fit
photoadapter to your viewing eyepiece.2
A T-mount is required to connect the assembly to the camera body.
1This is an approximate figure based on 35mm SLR cameras. DSLR/compact
system cameras use different sized image sensors compared to 35mm so an
equivalent telephoto conversion figure must be calculated separately.
2For information on telephotoadapters/photoadapters visit our Telephotography
and Digiscoping pages at www.opticronusa.com
2. Phonescoping with a suitable smartphone and the USM-2
The USM-2 offers a simple, flexible way of connecting your smartphone to your telescope
eyepiece and recording video or taking photos. The mount features a plate with adjustable
clamps to position and hold the smartphone on one side. On the other is an adjustable
3 pin clamp that fixes over the eyepiece.
To find out more visit the Telephotography and Digiscoping pages at www.opticronusa.com
Telephotography
Camera body
1. Telephotoadapter or
2. Photoadapter +
eyepiece (inside)
T-mount

Warranty
Please keep this Warranty Card in a safe place
Model: MM3 50 GA/45
Serial No:................................................................... Purchase Date: ...................................................................
Dealer:........................................................................................................................................................................
Opticron MM3 travelscopes are of a very high quality both in their performance and construction and for your peace
of mind we offer them with a Premier Plus Limited Lifetime Warranty.
The Premier Plus Limited Lifetime Warranty covers all the optical and mechanical components as well as the outer
protective armor, but not accessories such as dust caps, objective lens covers etc. which are covered by our Standard
Warranty.
In the case of accidental damage or defects attributable to faulty parts or assembly we will assume responsibility for
the full costs of repair up to 5 years from the date of purchase. We reserve the right to decide whether defective
parts or products should be repaired or replaced.
For the next 5 years your product is covered for defects attributable to faulty parts or assembly and we will assume
responsibility for those costs only, charging labor costs to carry out the repair.
The Premier Plus Limited Lifetime Warranty does not cover loss, theft or deliberate damage to the instrument.

Registration
It is important you register your new purchase to activate your Premier Plus Limited Lifetime Warranty. To register
your product and activate the warranty please visit www.opticronusa.com and complete the online Product
Registration Form.
Premier Plus Limited Lifetime Warranties are available on new instruments purchased from participating dealers in
North America and are transferable. If you part with your instrument please make sure the new owner has a copy of
your original proof of purchase and re-registers their ownership at www.opticronusa.com.
Privacy
Opticron takes your privacy seriously and we do not share personal information with other companies.

Address: Unit 21, Titan Court, Laporte Way, Luton, LU4 8EF, UK
Email: [email protected]
Servicing & Repair:
If you have a problem with your product please visit the Help and Support section at www.opticronusa.com