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Posted on Dec 27, 2009
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Science Tech 262 telescope image problems.

I have recently purchased a Science Tech 262 Telescope. i have collimated it and set it all up. i have tryed all of the four eyepieces in the telescope and can get a good image with just two of them. i cant get any image with the erector eyepiece fitted, it is 1.5x, and i cant get a good image with the 4mm eyepiece fitted either. im trying to view a house chimney stack at around 300mtrs. the image is blurry with the 4mm eyepiece fitted. any help is much appreciated. ****.

1 Answer

Joe Lalumia aka TelescopeMan

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  • Master 3,186 Answers
  • Posted on Dec 27, 2009
Joe Lalumia aka TelescopeMan
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Joined: Nov 04, 2007
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TOO much magnification! Hate to tell you but the MAXIMUM magnification for any telescope (all things being perfect-- like optics, and sky conditions) is 50 times aperture. So max for you is about 125 power.

Normally only about 30-40 times aperture is possible. So about 90 power is your normal max magnification.

We see this every Christmas. People buy scopes that say 275 power or 500 power on the outside of the box. It's a LIE!

Even in my 8 inch LX90 I rarely go above 200 power, and only when the sky is clear and very stable. Use the eyepiece with the largest number written on it which will be your lowest magnification.

  • Dobsonjacqui Sep 10, 2011

    Hi, I have the same telescope, never used, just dug out of garage to attempt to use but the instruction have been destroyed! Help! Does anyone have a photo copy I could use? Only a couple a pages. Huge thanks, pls email [email protected]. Huge thanks :)

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Related Questions:

1helpful
1answer

I have a dobsonion 306 mm reflecting telescope it is perfectly collimated but whenI observe a planet (currently Jupiter)I am getting mutiple images on both sides of the main image. The mirror is 15 mm...

If you are satisfied it is well collimated, then:


- did you use a laser collimator? If so is THAT collimated? Lots of them are not.
- check all the adapter rings, diagonals, barlows etc that you might have are all properly seated
- then, I'd say your main mirror securing clips are done up too tight and are distorting the mirror. They should only just touch lightly.
0helpful
1answer

Cant see image through main telescope

If your telescope is a reflecting telescope then the problem might be with the mirror alignment - the process is called collimation. There is an entire process on how to do this (Google Collimation Reflecting Telescope).
If you scope is a refractor then maybe you forgot to remove the lens cap. Check it out. Sometimes it is as simple as that.
Without further information and pictures, we cannot help too much.
walt
5helpful
1answer

I got an science tech reflector telescope power 262 and no instruction manual with it

You will not find a manual for that telescope. However Meade maintains a web site with all of their manuals. Look under the "4.5 inch Reflector" Heading for one that is similar to your telescope. They all assemble and are used in the same way.

http://www.meade.com/manuals/index.html
Apr 12, 2011 • Optics
0helpful
1answer

We need to know where to put the SECONDARY mirror because the previous owner took it out somehow.

Look at this picture:
http://www.tulsawalk.com/projects/telescope/images/secondary/secondary6.jpg

http://www.universetoday.com/wp-content/uploads/2008/07/reflecting.gif

The secondary is mounted toward the front of the telescope tube underneath the focuser (hole).

The scope must be collimated once you install it.

http://www.andysshotglass.com/Collimating.html
3helpful
1answer
1helpful
1answer

Have bought a second hand Science Tec 262 telescope and discovered that it is missing the Altitude Azimouth Mount.( I think it is called) It is the bit that attaches the barrel of the telescope to the...

I have found a company that makes the "Science Tech 525" telescope.
the name of the company is Elenco Electronics.

Here is a link to them

http://www.elenco.com/


Hope this helps.
Here is a link to an item being listed on ebay called a equatorial mount. That is the term for a precision telescope mount. This may be much more that what you need, but the price is tempting.
Take a look.
http://cgi.ebay.com/Meade-small-telescope-equatorial-mount-tripod-NEW-/230569965105?pt=LH_DefaultDomain_0&hash=item35af0a7631
I understand how your nephew feels,
Hope this helps,
Best Regards,
Mark
0helpful
1answer

We've a 600X power edu-science telescope which seems to be missing the inner ring which might be what the instructions call a secondary precision mirror.

The secondary mirror is a small tilted mirror near the front end of the telescope mounted on what's called a "spider". It reflects the light from the large mirror in the bottom back out through the hole in the focuser.

Usually these are already assembled and in place when you buy a reflector style telescope.

See this web site and watch the video:

http://www.andysshotglass.com/Collimating.html


2helpful
1answer

SO......102MM ASTRO-NOVA TELESCOPE.SHOULD I OPEN THE BACK[BLACK PLASTIC] OR THE FRONT[METALLLIC WHITE]? THANKS..

The front is the part where the eyepiece and the focuser happens to be. That is called a REFLECTOR style telescope. Light enters the front of the tube and bounces off the mirror in the bottom of the tube. There returns and bounces off the small secondary tilted mirror out into the focuser and eyepiece. There should be an easy to remove dust cap on the front end near the focuser. That end is pointed toward the sky.

These types of scopes should be checked for collimation to determine if the optics are all lined up.

Watch this video:

http://www.andysshotglass.com/Collimating.html

Try to find a local Astronomy club and get them to help you with the telescope.
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