Question about Tasco 578x60mm Reflector Luminova Telescopes

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Rear mirror I have a telescope which I believe the internal mirror in the base may have been adjusted. Is there a way to test or reset to original, or am i just wasting time. The manual states never to adjust this but try telling my son. I have tried to locate something on this on the net but cannot locate any help. Yours help would be much appreciated

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I may be telling you something you already know, but just in case.

If your telescope is a newtonian/dobsonian (i.e., long, large tube) then the mirror in the bottom can be adjusted to collimate or align properly.

On the other hand, if the top of the telescope has glass over it (refractor telescope) then putting it back into place will be more labor intensive and I wouldnt even try it. Try going to the manufacturers website and asking them. You might post the same question on a telescope forum called cloudynights.com. If you live in a large city, try searching for local astronomy clubs as every astronomy club has some guy there who takes these things apart for no reason just to put them back together.

Posted on Jul 10, 2009

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1 Answer

What does reflect mean


The direction of light can be changed in 2 ways. One way is refraction which is usually done by a lens (eyeglasses do this). The other is reflection, most often done by a mirror. Telescopes are almost always based on reflection and/or refraction designs. A reflective telescope has at least one curved mirror, often 2 curved mirrors which focus light by reflecting a larger area of natural light on a smaller spot.

Nov 20, 2014 | Optics

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How do I remove the black paper disk like thing on the telescope lens?


That BLACK PAPER is there to cause the trap of light and dust and etc from the MIRROR and is held in place usally with adjustable locking screws to balance the reflective properties of the lens.

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I dont know how to attach the telescope to the stand. can anyone help me? its an Orbitor 5500.


Is it like the picture in your question? Notice the focuser is on the UP side end of the telescope, and the MIRROR is actually the BOTTOM of the telescope. This is called a REFLECTOR telescope.

May 30, 2010 | Citiwell International Orbitor 5500...

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Hi! I bought the MEADE DS 2102MAK las month. Until today, I'm still not seeing anything. Tested at day time (no Sun) and dark sky but nothing.Please advise. Azeline of Kuala Lumpur, Malaysia


You must flip the internal mirror between the upright view port and the rear camera port. See page #6 in this manual and look at #8 on that page.

http://www.meade.com/manuals/TelescopeManuals/DSXseries/001DSXmanual.pdf


Feb 17, 2010 | Meade DS-2102MAK (20103) Telescope

1 Answer

Can't see out of eye piece


This is a reflector style telescope. The MIRROR is in the base! Light enters the front near the focuser and goes down the tube and bounces off the mirror and back to the front and through the eyepiece. The EYEPIECE end is pointed up.

Your scope TUBE should look like the reflector telescope on this web page:

http://www.amazon.com/Edu-Science-Astro-Nova-102-Telescope/dp/B001NLOQN2

Wish you had NOT bought this telescope. For about the same price you could have bought this:
http://www.telescope.com/control/product/~category_id=classicdobs/~pcategory=dobsonians/~product_id=08942

The scope above has a 6 inch mirror which is almost twice the size of the scope you bought.


Dec 27, 2009 | Edu-Science (10166) Telescope

1 Answer

Can't focus my meade etx-125. have turned focusing control more than 80x in both directions. Is there an stop on the focusing system. Originally had the electric focusing system on the scope couldn't focus...


yup there is a mechanical stop to prevent you from cracking the mirror by retracting or extending it too far.. once you break the pin off it needs to go to the factory for dis-assembly as they have to remove the primary to get to it and realign it my 105 did same thing....word of advise use a cable extender for focus not an electric focuser they fail to tell you that it can over run the built in stops making your scope useless...i may be mistaken but i believe the max turns is 25 or about for end to end focusing adjustment on the 125

Sep 28, 2009 | Meade ETX-125EC (500 x 127mm) Telescope

1 Answer

Cant adjust the mirrors to see any thing


Remove the eyepiece, and look down the focuser tube. The small diagonal mirror should have the full main mirror visible. If not, then adjust the diagonal mirror until all the main mirror is viaible, and the diagonal is centered. Then the main mirror is aligned until all the images viewed are concentric, with your eye being in the middle. That should do it.

Apr 18, 2009 | Galileo Optics

1 Answer

We have focused the telescope on an object - but it appears that the mirror is in the center of the view


If your telescope is like the one in the picture it is a refractor telescope. It does not have mirrors-- the diagonal in the rear of the telescope has a mirror. Put the lowest magnification eyepiece in the telescope-- the one with the LARGEST number-- and try again. This may be easier to learn in the day time on a distant object.

Dec 26, 2008 | Edu-Science (10166) Telescope

1 Answer

Cannot see anything.


Start by adjusting the focus draw tube all the way in, then back a little bit. In the day time indoors, remove the lens from the draw tube. Look into to the draw tube. You should be able to see your eye centered in the mirror. If you cannot see your eye at all, either the primary is tipped drastically or the secondary mirror is way out of adjustment. In that event I would return this scope to where you got it.

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