Takahashi E-160ED, Instruction Manual

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1 4
2 3
4 1
3 2
Adjusting the Secondary Mirror
ی
The secondary can be adjusted by loosening
the large nut at the center to turn it and the
three small sets of screws to tilt it.
Secondary Mirror
Optical Axis Pull Nut
Secondary Mirror Mark
Primary Mirror Mark
Secondary Mirror Mark
Four-vane Spider
Figure C-1
Figure C-2
Secondary Barrel
Optical Axis Set Screw
Using the collimating eyepiece and
collimating tube will be a great help in
collimating the ε-160ED, and are used in the
instructions below.
When collimation is necessary, complete
the process during the day in a brightly lit
room. The telescope can be pointed at a
brightly lit white wall, or at a translucent
white sheet placed across a window.
Place the tube with the focuser to the left,
facing the light source, as illustrated in the
figure. If you lose your orientation to the
movement of the secondary, place your
finger over the opening of the tube to regain
the orientation. The directions of the field of
view correspond to the numbers 1 through 4
on the illustration.