Opticron ES 100 GA ED/45 User manual

ES v4 Fieldscopes
User Instructions and 30 Year Guarantee
Model
ES 100 GA ED/45

AInterchangeable eyepiece
(not included).
BRubber armoured focus wheel
with contoured ribs to maximise
comfort and handling with or
without gloves.
C8:1 fine focus wheel
DTripod sleeve with +/- 90˚
rotation and large footprint
tripod adapter socket.
ERetractable lens hood - extend
when viewing in bright sunlight.
Fieldscope includes an integrated
rubber objective lens cap (not
illustrated).
Main Features & Specifications
Specifications 100 ED/45
Product Code
OG Dia (mm)
Close Focus (m)
Length (mm)
Weight (g)
41261
100
10
497
2830
A
B
C
D
E

Eyepieces • SDLv3 • HDF • HR
Product Code
Magnification 100
Eye Relief (mm)
41270E
27-80x
20-18
40810E
30xWW
22
40831E
42xWW
16
40861E
134x
16
40862E
27-80x
22-17
40930E
36xWA
18
40931E
46xWA
17
41145E
30-90x
20-16
Eyepieces
Your ES fieldscope will bring a new dimension to long range observation bringing far away subjects into clear and
sharp focus.
1. To minimise 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 centre 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 centred. With some eyepieces a small amount of
refocusing may be required as the zoom is adjusted.
6. The retractable lens hood should be extended when viewing in bright sunlight.
WARNING. Never under any circumstances use a fieldscope to view the sun. Doing so will cause serious damage
to your eyes.
Getting Started

Stay-on-the-Scope Waterproof in Green
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 neoprene carry
strap for extra comfort.
Waterproof Cases
To clean outer glass surface of the eyepiece and objective lens, gently remove excess dirt and dust using
compressed air or a lens cleaning 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 guarantee.
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.
Care & Cleaning

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
fieldscope + telephotoadapter or fieldscope + eyepiece
+ photoadapter. To convert your ES fieldscope to a
1250mm1/f.12.5 telephoto lens, you will need a 40215
telephotoadapter or suitable push fit photoadapter for 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.opticron.co.uk
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.opticron.co.uk or contact Sales
on [phone].
Telephotography
Camera body
1. Telephotoadapter or
2. Photoadapter +
eyepiece (inside)
T-mount

Guarantee
Please keep this Guarantee Card in a safe place
Model: ES 100 GA ED/45 v4
Serial No: ................................................................. Purchase Date:...................................................................
Dealer: .......................................................................................................................................................................
Opticron ES fieldscopes are of a very high quality both in their performance and construction.
We guarantee some parts in these instruments for up to 30 years under the following conditions:
(i) In the case of defects attributable to faulty processing or materials, we will assume responsibility for the labour
and material costs during the first 10 years after purchase. We reserve the right to decide whether defective parts
should be repaired or replaced.
(ii) During the next 20 years we will assume responsibility for material costs only, charging corresponding labour
costs.
(iii) We will accept no liability for damage caused by incorrect use or for any repairs or actions which have been
carried out outside our firm.
(iv) Rubberised coverings are excluded from the guarantee.
This guarantee is in addition and does not affect your statutory rights.

Registration
If you would like to register your purchase with us please visit www.opticron.co.uk and complete the online
Product Registration Form.
Alternatively please telephone us during normal working hours on the numbers given. We will need the product
name and serial number (if applicable), purchase date and outlet, your name and postcode.
Registration is voluntary and failure to register will not diminish your rights under the guarantee.
Privacy
Opticron takes your privacy seriously and we do not share personal information with other companies.

Address: Opticron, Unit 21, Titan Court, Laporte Way, Luton, Bedfordshire, LU4 8EF, UK
Phone: [phone] Email: [email protected]