Omegon 150/750 EQ-4 Instruction Manual

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Instruction Manual

Omegon® 150/750 EQ-4

English version 12.2014 Rev A

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The Omegon® 150/750 EQ-4

Congratulations on the purchase of the new Omegon® 150/750 EQ-4. This advanced telescope will
give you hours of fun, with its all optical glass lens and light gathering ability, it is the ideal
companion for deep sky observation. With this telescope you will be able to see the craters on the
Moon, star clusters, nebulae the Jupiter disc features and its Galilean moons and the rings of Saturn.
We have included many accessories so it will be easy to use this telescope.

1. Included parts

We have included several accessories that will make the use of the telescope easier and fun, please
take a look at the list of the parts so you can identify them in the future.

1. Barlow Lens 2x.
2, 3. Two eyepieces 1.25” (31.75mm); a Plössl 25mm, Plössl 6.5mm eyepiece;

4. Red-dot Finderscope;

2. Getting Started

It is very simple to get started. Here is how the
telescope works. The telescope main lens should
point to the object being observed. The mirror
on the back of the tube will gather the light
coming from the object and reflects it to the
secondary mirror that brings it to the eyepiece.
The focuser tube moves up and down to get a
precise focused image. At the focuser one can
use the supplied accessories. Different accessory
combinations give different results, such as
different image magnifications or correct image.
But all this will be explained in detail in the next
pages.

3. Assembly

Start by setting the tripod. Open the tripod legs as shown (figure 2). Place the supplied accessory
tray (figure 3). The accessory tray can be used to place the telescope accessories such as the
eyepieces, filters etc. Next place the equatorial mount on top of the tripod (figure 4), the mount will
bear all the weight of the telescope so it is important to thread it securely. Thread the counterweight
shaft as shown (figure 5), it fits the threaded hole on the Right Ascension (R.A.) axis. Remove the
foot-saver (the screw and washer – figure 6) from the shaft’s end and slide in a Counterweight. Make
sure to use the counterweight’s locking knob so that it is securely fastened. You can leave it at half
the shaft length for now.

ATTENTION! Never look at the Sun through a
telescope. Concentrated Sun light may cause serious
eye injury. Children should use only with adult
supervision.

Figure 1. Parts List

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Place the tube rings (figure 7) on the mount
platform and make sure both clamp knobs
are facing the same side, they will be used to
place and remove the optical tube when
necessary. It is important that they are well
tightened and don’t rotate. Next, insert the
fine adjustment knobs on each axis (figure

8). These knobs allow to make small
movements on both axis of the telescope.
Use the included thumbscrew on each. Make
sure they fit the slotted surface on the
protruding axis shaft. Open the tube rings
that were previously fitted to the telescope
and insert the tube (figure 9). Close the

Figure 3. Tray placement.

Figure 2. Set the tripod.
Figure 5. Thread the counterweight shaft.

Figure 4. Place the equatorial mount.

Figure 6. Slide counterweight and thread the foot-saver.

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rings and clamp the two knobs. Slide the tube
so that the focuser is pointing up and is more or
less centred. Depending on the telescope tube
weight you might find useful to use two
counterweights. The finderscope is placed next
to the focuser, remove the two thumbscrews as
shown in figure 11 and place the finderscope.
Make sure the finderscope (figure 12) is
pointing in the same direction as the

telescope’s aperture so when you point the

telescope to an object you also point the
finderscope to it.

Figure 7. Place the tube rings.

Figure 8. Place fine adjustment knobs.
Figure 9. Slide tube and thread the ring knobs.

Figure 10. Finderscope thumbscrews.

Figure 11. Remove the finderscope thumbscrews.