8
Learning to Use the
EZ Finder, Eyepieces,
and Focuser
The EZ Finder II
The EZ Finder II works by projecting a tiny red dot (it is not
a laser beam) 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 to pinpoint your target object
(Figure 13). The red dot is produced by a light-emitting diode
(LED) near the rear of the sight. The 3V lithium battery pro-
vides the power for the diode.
For the EZ Finder II to work properly, it has to be aligned with
the telescope. When the two are aligned, a celestial object that
is centered on the EZ Finder II’s red dot should also appear
in the center of the telescope’s eyepiece. Alignment of the EZ
Finder II is easiest during daylight, before observing at night.
Aim the telescope at a distant object such as a telephone pole
or roof chimney and center it in the telescope’s eyepiece. The
object should be at least 1/4 mile away. Now turn on the EZ
Finder II and look through it. Without moving the main tele-
scope, use the EZ Finder II’s azimuth (left/right) and altitude
(up/down) adjustment knobs (see Figure 11) to position the
red dot on the object in the eyepiece. When the red dot is
centered on the distant object, check to make sure that the
object is still centered in the telescope eyepiece. If it isn’t, re-
center it and adjust the EZ Finder II’s alignment again. When
the object is centered in the eyepiece and on the EZ Finder’s
red dot, the EZ Finder II is properly aligned with the telescope.
Once aligned, EZ Finder II will usually hold its alignment even
after being removed and remounted. Otherwise, only minimal
realignment will be needed.
Figure 13. The EZ Finder II superimposes a tiny red dot on
the sky, showing right where the telescope is aimed..
Figure 14. StarSeeker IV telescopes come with 23mm and
10mm wide-field eyepieces.
Figure 12. Insert the EZ Finder II into its dovetail shoe in
the orientation shown and secure it with the thumbscrew.
Red dot
Sight tube
Dovetail
mounting shoe
Turn the ON/OFF knob (see Figure 11) clockwise until you
hear the “click” indicating that power has been turned on. Look
through the back of the reflex sight with both eyes open to
see the red dot. Position your eye at a comfortable distance
from the back of the sight. In daylight you may need to cover
the front of the sight with your hand to be able to see the dot,
which is purposefully quite dim. The intensity of the dot is
adjusted by turning the ON/OFF knob. For best results when
stargazing, use the dimmest possible setting that allows you to
see the dot without difficulty. Typically a dimmer setting is used
under dark skies and a brighter setting is needed under light-
polluted skies or in daylight.
At the end of your observing session, be sure to turn off the
ON/OFF knob on the EZ Finder II
Eyepieces and Magnification
Your StarSeeker IV telescope comes with two special wide-
field eyepieces, which have a 60-degree field of view (Figure
14). Eyepieces are commonly referred to by their focal length
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