Takahashi FC-100DZ Bedienungsanleitung
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Instruction Manual
TAKAHASHI
FC-100DZ
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Thank you for purchasing the Takahashi FC-100DZ telescope.
The FC-100DZ is a high-powered telescope with an objective
lens that utilizes fluorite, and depending on the implementation of
reducers, atteners, or extenders, it may utilize many focal lengths.
In order to use your telescope to its highest potential, please read
this instruction manual very carefully, and familiarize yourself with
all of the functions this telescope offers. All Takahashi telescopes
have been strictly inspected before shipment. If there is anything
wrong with your telescope when unpacked, please contact your
authorized Takahashi dealer at once.
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WARNING
CAUTION
Do not point this telescope at the
sun without appropriate solar
viewing protection. Using the
astronomical telescope to look
directly at the sun is terribly
dangerous due to the light and heat
concentrated on its focal point.
DANGER
When placing the tube assembly onto an equatorial mount, be
ی
careful to balance the tube in the tube holder. This will prevent
injury to fingers and will prevent it from falling to the ground.
When placing the tube assembly in the tube holder, always hold
the tube with one hand to keep it from falling o the tube holder
onto the ground.
Always lay the tube assembly on a stable surface that totally
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supports it to protect it from damage.
Keep the tube assembly out of the Sun. Otherwise, the tube
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assembly could heat up, causing lens damage. If the sun light
were to reach it directly, the temperature around it would greatly
increase and could cause a re.
Make focus adjustments very carefully to reduce the risk of injury.
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Make sure children do not swallow the smart parts such as
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screws, rings or caps. Also, the box contains huge plastic bags
which should be kept out of the reach of children.
Keep all packing materials away from an open flame. These
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materials are ammable.
Warning & Caution
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Contents
Warning & Caution ------------------------------------------ 3
Contents ------------------------------------------------------- 4
Specications ------------------------------------------------ 5
Tube Assembly Layout ------------------------------------ 6
Setup ----------------------------------------------------------- 7
Focusing ------------------------------------------------------- 9
Attaching the Finder -------------------------------------- 10
Observation ------------------------------------------------ 13
About the Accessories ----------------------------------- 15
About Fluorite ---------------------------------------------- 22
Care & Maintenance ------------------------------------- 23
Additional Precautions ----------------------------------- 23
System Charts --------------------------------------------- 24
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Specications
Conguration ------------------------------ Doublet Fluorite Apochromat
Eective Aperture ----------------------- 100mm multi-coated
Focal Length ------------------------------ 800mm
Focal Ratio -------------------------------- 1:8
Resolving Power ------------------------- 1.16”
Limiting Magnitude ---------------------- 11.8
Light Gathering Power ------------------ 204x
With FC-35 Reducer 0.66x
Focal Length ----------------------------- 530mm
Focal Ratio ------------------------------- 1:5.3
Image Circle ----------------------------- φ44mm (60% illuminated)
With FC/FS Multi Flattener 1.04x
Focal Length ----------------------------- 820mm
Focal Ratio ------------------------------- 1:8.2
Image Circle ----------------------------- φ44mm (60% illuminated)
Diameter of Main Tube ----------------- 95mm
Total Length of Main Tube ------------- 840mm
Weight of Main Tube Assembly ------- 3.9kg
Finder Scope ------------------------------ 6x30 or 7x50 optionally available
Accessories -------------------------------
Warranty Card, Instruction Manual,
Hex Wrench (4mm)
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Tube Assembly Layout
Dew Shield Cap
Eyepiece Adapter Cap
31.7(1¼”) Eyepiece Adapter
Coupling S
50.8(2") Sleeve
Drawtube Clamp
Drawtube
F-50.8 Adater Coupling
Focusing Knob
Focuser Housing
Optional Finder Scope Bracket
Optional 6x30 Finder Scope
Main Tube
Dew Shield Ring
Dew Shield Lock Screw
Dew Shield
50.8(2”) Adapter (for Refraction)
50.8(2”) Extension Tube L
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Balancing the Declination Axis▼
Loosen the right ascension (R.A.) clamp1.
and make sure the declination (Dec.) axis
is in a horizontal position. At this time be
sure to adjust the balance of the R.A.
axis, as after this point it becomes very
dicult to rotate.
While making sure that the equipment2.
does not move, slowly tighten the Dec.
clamp and check the balance around the
axis.
When you feel that the balance is not3.
right, loosen the tube holder clamp and
move the telescope barrel back and
forth to find the most balanced position.
Determining the appropriate balance is
important when using a camera so take
your time to carefully balance the system.
▼Balancing the Right Ascension Axis
After the declination axis is well balanced, 1.
tighten the Dec. clamp to x it into place.
Loosen the R.A. clamp and check the2.
balance around the R.A. axis.
If adjustment is required, move the mount3.
counter weight to nd proper balance.
If after pulling the weight all the way to4.
the tip of the balance shaft the telescope
is still too heavy, an additional weight may
be required (sold separately).
Balancing
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After attaching the telescope to the tube
holder, again check to see that the system
is properly balanced. Balancing should be
performed with all accessories attached to
the telescope, such as diagonals, eyepieces
or cameras. Proper balance is important to
ensure accurate tracking and to minimize
wear on the mount.
Installation on an Equatorial Mount
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As shown in the figure below, the tube
holder can be attached with two cap bolts.
With the tube holder open, place the
telescope inside the tube holder and then
close the tube holder. Before tightening
the tube holder clamp, carefully adjust
the balance of the optical tube assembly
(for further explanation see the Equatorial
Mount Manual). A dedicated tube holder
can be attached to all of our systems and
can be changed depending on the desired
function. We strongly recommend using a
large equatorial mount when attempting to
take images of stars.
Setup
Tube Holder
Tube Holder Clamp
Tube Holder Base
R.A. Axis
R.A. Clamp
Telescope
Counter Weight
Dec. Axis
Dec. Clamp
Equatorial Mount
Cap Bolt
Hex Wrench
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Attaching the eyepiece
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Loosen the compression ring, remove
the cap, then insert an eyepiece into
the eyepiece adapter and tighten the
compression ring to lock the eyepiece.
Eyepieces
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A wide variation of eyepieces are available
from Takahashi.
LE Series
▼
These high quality eyepieces possess
a wide field of view and come in several
models:
・31.7mm(1¼”) barrel
LE5mm, LE7.5mm, LE10mm, LE12.5mm,
LE18mm, LE24mm, LE30mm
・50.8mm(2”) barrel
LE40mm, LE50mm
TAK-UW Series
▼
Ultra wide angle eyepieces designed to
achieve sharpness for observation of
celestial bodies:
・31.7mm(1¼”) barrel
TAK-3.3UW, TAK-5.7UW, TAK-7UW,
TAK-10UW
TOE Series▼
Long eye-relief, most suitable for planetary
observation with high magnification.
Available in:
・31.7mm(1¼”) barrel
TOE2.5, TOE3.3, TOE4.0
Installation of additional accessories
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There are several adapters and rings that
can be used to attach additional accessories.
Carefully review the system chart to ensure
correct installation. Incorrect installation can
result in loss of focus, impeding the true
capabilities of the device.
ABBE Series
▼
Simple 2 group 4-element eyepieces with
high contrast; less expensive with high
performance:
・31.7mm(1¼”) barrel
Abbe 4mm, Abbe 6mm, Abbe 9mm,
Abbe 12.5mm, Abbe 18mm, Abbe 25mm,
Abbe 32mm
ERFLE
▼
With 3-group 5-element optics, these
eyepieces oer 60 degree apparent eld of
view with almost no are or ghost:
・31.7mm(1¼”) barrel
Er-28mm
Compression Ring
Eyepiece
Plastic Ring
50.8(2”) Adapter (for Refraction)
Coupling S
M43x0.75
M36.5x1.0
31.7(1¼”) Eyepiece Adapter
31.7(1¼”) Eyepiece
50.8mm(2”) 31.7mm(1¼”)
50.8(2”) Sleeve
50.8mm(2”)
50.8(2”) Extension Tube L
M72x1.0
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Focusing
Focusing System
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The telescope uses a rack-and-pinion
focusing system. This system permits rapid
and accurate focus adjustment. By turning the
focusing knob clockwise, the drawtube will
move out of the telescope tube. By turning
the focusing knob counter-clockwise, the
drawtube will move into the telescope tube.
Adjusting the focus point
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Remove the dew shield cap from the dew
shield and insert the eyepiece into the
eyepiece adapter or diagonal. After ensuring
that the drawtube clamp is loose, turn the
focusing knob slowly.
At the time of shipment, the drawtube is
fully retracted inside the telescope. When
using the telescope for the first time, slowly
rotate the focusing knob clockwise and it will
eventually adjust to the focusing point. In
order to achieve focus on celestial bodies,
it is sometimes easier to focus on a distant
terrestrial object, such as a radio tower
or tall building (the scenery should look
upside down) and then marking a line on
the drawtube. This marked position on the
drawtube can then serve as a reference when
observing celestial bodies. Slight adjustments
from the marked position can then be made
to achieve the best focus. When observing
celestial objects at a high magnication, even
a slight error in focus can cause them to look
After attaching an eyepiece to the telescope, it is necessary to adjust the focus in order to see
celestial bodies or scenery clearly. In particular, when using the telescope to view celestial
objects
, if the focus is o by a large amount, stars will not be visible even when in the eld
of view of the eyepiece. Furthermore, even a slight error in focus can degrade the image
through the telescope. When taking images of celestial bodies, accurate focus is critical.
The atmosphere will limit the highest magnification that can be used on any given night.
Begin by using a low power eyepiece, and focus the image. Then progressively increase
magnification by using shorter and shorter focal length eyepieces until the desired
magnication is reached.
This procedure allows the centering of the object at high magnication.
blurry or not visible. Therefore it is better
to begin with a low magnification eyepiece
and then gradually increase magnification,
adjusting focus each time.
About the Drawtube Clamp
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After achieving proper focus the drawtube
clamp can be used to lock the drawtube in
position. It is not absolutely necessary when
performing visual observations. However,
when imaging, the weight of the attached
camera could cause the drawtube to move
outward and in turn defocus the image.
Therefore it is best to use the drawtube
clamp to secure the drawtube in place.
When adjusting focus again, ensure the
drawtube clamp is properly loosened.
Forcefully turning the focusing knob while
the lock is tightened may damage the gear
or cause a scratch in the drawtube.
Drawtube Clamp
Drawtube will move out of the telescope tube by
turning the focusing knob clockwise.
Focusing Knob
Drawtube
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Attaching the Finder Bracket
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The finder is attached to the telescope
using two 4mm cap bolts and washers
provided with the nder bracket. The nder
attaches to two holes in the telescope
focuser casting. When shipped, these holes
have two Philips head screws inserted for
transport. Please note that if the washers
are not used, the ends of the cap bolts may
contact the drawtube and cause damage.
positioned. Use the small screwdriver to x
the 3 lock screws making sure to tighten
them equally and that gap between the
nder and the nder bracket is equal. Then
adjust the finder adjusting screw with the
lock nut to align the nder axis with the axis
of the main telescope.
Attaching the Finder
With the FC-100DZ, Takahashi oers a 6x30 or 7x50 nder as an optional accessory.
The following instructions provide information on installing the optional nder.
4mm Hex Wrench
Washer
Finder Bracket
Hex Cap Bolt
Finder Adjusting Screw
Groove
6x30 Finder Scope
Lock Screw
Lock Nut
6x30 Finder Bracket
Attaching the Finder Scope
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If the finder adjusting screws and lock
screw protrude too far into the tube of the
finder bracket they may prevent the finder
from being fully inserted. If this is the
case, unscrew slightly until the finder can
be inserted. You can move the lock nut
along the adjustment screw by rotating it.
In order to adjust the finder lock screw a
small screwdriver is necessary. As shown in
the right gure insert the nder in the nder
bracket and move it back and forth until
Focusing Housing
Finder Adjusting Screw
7x50 Finder Scope
Lock Screw
Lock Nut
7x50 Finder Bracket
Attaching the 6x30 Finder▼
Attaching the 7x50 Finder▼
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