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④ Insert the collimating eyepiece and
tilt the secondary mirror until the dot on
the surface in over the center of the cross
hairs. In the illustration Fig. C-7, the
center of the collimating eyepiece
matched the center of the crosshair, but
the secondary mirror dot is located low
and to the left. The secondary mirror
must now tilted toward the primary
mirror mark (+) and the (+) must be
moved upwards. Slightly loosen the
push screw A, B C after backing off the
lock nuts. Loosen the large knurled nut
in the center and tighten the push screw
A, B and C. Refer to the Figs. C-8 and C-9.
⑤ Now the center dot of the secondary
has been shifted below the center of the
crosshairs. It then becomes necessary to
tilt the secondary using screws A, B and
C to center the dot on the secondary
mirror with the center of the crosshairs.
Sleeve
Opening View of the Collimating
Eyepiece
Fig. C-6
Perpendicular Line
Horizontal Line
Fig. C-7
Push
Push
Push
Loosen
Fig. C-8
Fig. C-9
Push
Loosen the Pull Nut
Push the screw A, B, C
Push the screw B
Summary of Contents for e-130D
Page 1: ...1 ε 130D Hyperboloid Flat field Astrograph Instruction Manual TAKAHASHI ...
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Page 27: ... 27 Memo ...
