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7. Troubleshooting and frequently asked questions 

Q: I get a mirrored view of the objects. Like if they were reversed, and 

show’s up like 

ᴙ 

R: Mirror telescope reverse objectes, this is give a mirrored image of the object. To get a corrected 
image it is necessary to an image corrector. Note that reflector telescopes are not intended to be 
use for terrestrial observation.

 

Q: I use the finderscope to point to objects but I always miss the target. 

A: You probably need to realign the finderscope. Please proceed as described in 4.2. 

Q: When I use the barlow lens and the Plössl 6.5mm  eyepiece the image is so dark I can’t hardly 
see anything. 

A: Power should be used with moderation. It depends on how stable the atmosphere is, too much 
turbulence causes image distortion. Usually the limit is 2x for each millimeter of the telescope 
aperture. In this case, the telescope has an aperture of 150mm, so in a very good night you should be 
able to reach 300x. The more magnified the image is, the darker it gets. 

Q: Is my telescope compatible with other eyepieces ? 

A: Omegon telescopes are compatible with all telescope eyepieces from different manufacturers as 
long as the eyepiece is a 1.25” (or 31.75mm) size eyepiece. If you would like to test an eyepiece from 
a fellow astronomer go ahead. Different eyepieces provide different visual experiences. 

Q: I want to use my telescope to take pictures. 

A: This telescope is designed for visual use. It doesn’t mean it can’t be used for photography, however 
it will be hard to get high quality pictures with this telescope. If you have a smartphone you can shoot 
the Moon or some terrestrial objects. Search online for digiscoping and afocal photography. 

Q: The stars only appear as points in the telescope.

 

A: Stars will always appear only as points, even in the largest telescopes in the world. It is more 
interesting for  beginners to observe two-dimensional objects, such the moon or planets. Once you 
find these, you will be  able to start learning about the astronomical calendar. 

Q: I would like to observe the Sun.

 

A: An appropriate solar filter, placed over the objective, is essential for observing the sun. These are 
available  as plastic foil or glass filters. They allow only a tiny and harmless fraction of sunlight into 
the telescope, when securely positioned over the objective, so allowing you to observe the sun in 
complete safety.  Eyepiece solar filters (not available from us) should be avoided at all costs as they 
are considered unsafe. 
 

Note: Never look directly at the sun through a telescope without an objective solar filter! 
 
Q: I can’t see anything when I look through my telescope

 

A: The telescope is only suitable for astronomical observing and when used outside at night. 
Observing from  inside the house or during the day is usually not possible. The dust caps must first be 
removed and an eyepiece inserted before you can start observing. Are you  sure you have removed all 
the dust caps, not just the small ones? If you have not, then no light will  enter the telescope and 
everything will appear black. 

Содержание 150/750 EQ-4

Страница 1: ...1 Instruction Manual Omegon 150 750 EQ 4 English version 12 2014 Rev A...

Страница 2: ...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 combina...

Страница 3: ...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 Op...

Страница 4: ...move 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 telesco...

Страница 5: ...you release the locking handknobs the telescope moves freely The telescope is balanced when neither the tube nor the shaft axis tilt to any side To adjust the R A axis arrow in figure 15 and rotate t...

Страница 6: ...ou will be able to see a defocused star It will appear as a series of rings These are called diffraction rings and they will be important to determine how good or how bad the alignment is figure 19 If...

Страница 7: ...4 vanes cross shaped and the primary mirror s holding pads figure 21 The secondary mirror can be adjusted by using the 3 screws figure 17 Releasing it can make the secondary mirror support to rotate S...

Страница 8: ...e mentioned the finderscope as a valuable tool to point the telescope at an object To operate properly the telescope and the finderscope should be aligned The image obtained through the finderscope ha...

Страница 9: ...2 Looking through the finderscope it should be powered on we see the same building but in this case the chimney is not centered We adjust the finderscope using the two thumbscrews so that the finders...

Страница 10: ...e Telescope focal length is 750mm Pl ssl 25 eyepiece focal length is 25 mm 750 25 30 This means that the Pl ssl 25mm eyepiece provides a 30x power magnification This seems low but try it you will see...

Страница 11: ...nator between illumated and dark surfaces 6 2 Jupiter is the biggest planet of our solar system It is also one of the favorite targets for beginners Galileo was able to discover that the four tiny dot...

Страница 12: ...ual use It doesn t mean it can t be used for photography however it will be hard to get high quality pictures with this telescope If you have a smartphone you can shoot the Moon or some terrestrial ob...

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