ORION TELESCOPES & BINOCULARS Observer 60mm EQ, Инструкция по эксплуатации

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11
Figure 4a-b
Proper operation of the equatorial mount requires that the telescope tube be balanced on the R.A. axis. (a) With the R.A. lock
lever released, slide the counterweight along the counterweight shaft until it just counterbalances the tube. (b) When you let go with both
hands, the tube should not drift up or down.
a
b
11. Attach the EZ Finder II reflex sight (4) to the EZ Finder II
mounting bracket (16). Loosen the two securing screws on
the EZ Finder II (Figure 5) and slide it onto the mounting
bracket. Tighten the two securing screws. You will align the
EZ Finder II later, in the Getting Started section.
12. Insert the chrome barrel of the 90° mirror star diagonal (2)
into the focuser drawtube (17). (Figure 2b). Secure the star
diagonal with the diagonal holder thumbscrews (19).
13. Insert the chrome barrel of the 25mm Kellner eyepiece (3)
into the star diagonal and secure it with the eyepiece holder
thumbscrew (20).
Your telescope is now fully assembled and should resemble
Figures 1-3.
4. Getting Started
Balancing the Telescope
To insure smooth movement of the telescope on both axes of
the equatorial mount, it is imperative that the optical tube be
properly balanced. We will first balance the telescope with
respect to the right ascension axis. The telescope will already
be balanced in declination.
1. Keeping one hand on the telescope optical tube (1),
loosen the R.A. lock knob (22). Make sure the Dec. lock
knob (24) is locked. The telescope should now be able to
rotate freely about the R.A. axis. Rotate it until the counter-
weight shaft (25) is parallel to the ground (i.e., horizontal).
2. Now loosen the counterweight lock knob (26) and slide the
weight along the shaft until it exactly counterbalances the
telescope (Figure 4a). That’s the point at which the shaft
remains horizontal even when you let go of the telescope
with both hands (Figure 4b).
3. Retighten the counterweight lock knob. The telescope is
now balanced on the R.A. axis.
Now when you loosen the lock knob on one or both axes and
manually point the telescope, it should move without resist-
ance and should not drift from where you point it.
Focusing the Telescope
With the 25mm Kellner eyepiece (3) inserted into the 90° mir-
ror star diagonal (2) and secured with the thumbscrews, aim
the optical tube (1) so the front (open) end is pointing in the
general direction of an object at least 1/4-mile away. Now, with
your fingers, slowly rotate one of the focus wheels (18) until
the object comes into sharp focus. Go a little bit beyond sharp
focus until the image starts to blur again, then reverse the
rotation of the knob, just to make sure you’ve hit the exact
focus point.
Operating the EZ Finder II reflex finder
The EZ Finder II reflex finder (4) (Figure 5) works by project-
ing a tiny red dot onto a lens mounted in the front of the unit.
When you look through the EZ Finder II, the red dot will
appear to float in space, helping you locate even the faintest
of deep space objects. The red dot is produced by a light-
emitting diode (LED), not a laser beam, near the rear of the
sight. A replaceable 3-volt lithium battery provides the power
for the diode.
To use the EZ Finder II, turn the power knob clockwise until
you hear a “click” indicating that power has been turned on.
With you eye positioned a comfortable distance from the back
of the sight, look through the back of the reflex sight with both
eyes open to see the red dot. The intensity of the dot can be
adjusted by turning the power knob. For best results when
stargazing, use the dimmest possible setting that allows you
to see the dot without difficulty. Typically, a dim setting is used
under dark skies and a bright setting is used under light-pol-
luted skies or in daylight.
At the end of your observing session, be sure to turn the
power knob counterclockwise until it clicks off. When the two
white dots on the EZ Finder II’s rail and power knob are lined
up, the EZ Finder II is turned off.
Aligning the EZ Finder II
When the EZ Finder II is properly aligned with the telescope,
an object that is centered on the EZ Finder II’s red dot should
also appear in the center of the field of view of the telescope’s
eyepiece. Alignment of the EZ Finder II is easiest during day-
light, before observing at night. Aim the telescope at a distant
object at least 1/4 mile away, such as a telephone pole or