Omegon 750 EQ-3, 150 EQ-3 Instruction Manual

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Instruction Manual

Omegon 150/750 EQ-3

English version 12.2014 Rev A

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The Omegon® 150/750 EQ-3

Congratulations on the purchase of the new Omegon® 150/750 EQ-3. This telescope will give you
hours of fun, with its all optical glass mirror and light gathering capability, it is the ideal companion
to start in the world of amateur astronomy. With this telescope you will be able to see the craters on
the Moon, star clusters, some 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. & 2. Two eyepieces 1.25” (31.75mm); a Plössl 25mm and a Plössl 6.5mm eyepiece;

3. 2x magnification Barlow Lens;

4. Red-dot Finderscope;

2. Getting Started.

It is very simple to get started. Here is how
the telescope works. The telescope aperture
should point to the object being observed.
The mirror in 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. Close to the aperture there is the
focuser. The focuser 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 for example.
All this will be explained in detail on the next
pages.

3. Assembly. Start by assembling tripod

(figure 2), place the accessory tray (figure 3), the accessory tray will be useful when observing as a
platform for accessories. Next the equatorial mount should fit the top of the tripod (figure 4).
Tighten it carefully, all telescope weight will be laying on it. Thread the counter-weight shaft (figure

5) and the fine adjustment knobs (figure 6), make also sure these are well tightened. Slide the
counterweight on the shaft it should be placed at half the shaft length (figure 7). Make sure the foot­saver is also in the right place at the end of the shaft, it prevents the counterweight from dropping
accidentally. The two supplied optical tube rings should be placed as shown (figure 8). Insert the
optical tube and make sure to tighten the ring knobs (figure 9). They prevent the tube from sliding
off. Now it is time to place the finderscope (remove the finderscope thumbnuts and place the
finderscope pointing to the telescope’s aperture – figure 10 and 11). By unlocking the two knobs
(figure 12) you can point the telescope to any direction. Before starting to use the telescope one last
thing is required, you need to balance the telescope. Loosen the tube rings so the tube slides and
adjust it so it is balanced. Do the same for the counterweight (figure 13).

Figure 1. Parts list.

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Figure 2. Assemble the tripod.

Figure 3. Place accessory tray.

Figure 4. Place the equatorial head.

Figure 5. Thread the counterweight shaft.

Figure 6. Place the hand knobs.

Figure 7. Slide counterweight and the Foot-Saver.