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Telescope images are upside down - Optics

Posted by John Hottinger on

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Anonymous

  • 1 Answer

SOURCE: upside down images

ALL telescopes will show the image upside-down. You learn to adjust for this. IF you must, they do make a lens called an "erecting lens" that would flip the image back right-side up.

Posted on Dec 28, 2008

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Anonymous

  • 4 Answers

SOURCE: upside down images on my telescope. Bought used -no manuel. What to do?

In a refractor images are upside down as with most telescopes. You need an image erector to create a normal correct R and L and Up and Down image. It is a lens which goes in front of the eyepiece to give a correct image.

Posted on Jun 02, 2009

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GoneToPlaid

  • 134 Answers

SOURCE: everything is upside down

Astronomical telescopes produce an upside-down and reversed image (image is rotated 180 degrees from an upright position) since this doesn't matter when you are looking at things in the night sky. Accessories are available for rotating the image to an upright position, but most of those accessories do not work well with Newtonian style reflector telescopes such as the 114EQ reflector.

Posted on Jun 26, 2009

Anonymous

  • 1 Answer

SOURCE: Just came into a used tasco 302048 . Everything is upside down!!!

the scope is made for both terrestrial viewing and astronomical. In order to see terrestrially upright, you need an inverting STAR DIAGONAL. The eyepiece will do nothing for inverting the image. you might have 2 diagonals in the kit that came wih the scope. the diagonal is the part that fits into the scope. then you place the eyepiece in the diagonal. if you have 2 diagonals , one is a 90 degree angle,(astronomical) and one is a 45 degree angle, (terrestrial). the eyepieces change the magnification of the image. the bigger the number (9mm, 20mm, 26mm,) the smaller the image. the smaller the number , the bigger the image gets. the number is inverse of the image. Hope this helps.

Posted on Oct 23, 2009

SOURCE: my 102mm astro-nova telescope shows everthing

No, all astronomical telescopes show upside down images. You can buy what is called an "erecting prism" (just Google it) to use for terrestrial viewing.

Remember --- no up or down in space! Read my "TIPS" in my Profile, called ----"Frequently Asked Question".

Clear Skies!

Posted on Dec 29, 2009

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1 Answer

Why when I look through my telescope it's upside down


The image in astronomical telescopes are naturally upside down. This can be corrected using an inverting eyepiece . The reason this is the case, is that normally when viewing astronomical objects it doesn't matter if the image is upside down, so to minimise the loss of light that is the more important issue, unnecessary optical surfaces are eliminated. Terrestrial telescopes do naturally have inverting eyepieces as people expect to see objects the right way up.
Getting and inverting eyepiece will be cheaper the changing telescopes! :) Your eyes see everything upside down too, but your brain turns the image the right way up. The image in cameras is also upside down at the image plane, but the electronics turn it the right way up for you.

Jan 02, 2015 | Optics

1 Answer

Having been given a Celestron LT 76AZ for Christmas, the viewer seems to be in the wrong place, ie horizontal, and the image seen is upside down - can I rectify this?


This telescope works by a mirror. The image is upside down, sorry.
However you might want to get a Telescope USB camera, then you can see the image on your PC the right way up.

Dec 29, 2014 | Celestron AstroMaster LT 76AZ Newtonian...

1 Answer

Image is upside down in Celestron PowerSeeker 114AZ telescope


That's because this telescope is what's called a reflector. The image in reflector telescopes are upside down. This isn't an issue since reflectors are designed for looking at the night sky.

Jun 11, 2014 | Celestron PowerSeeker 114 EQ Telescope

1 Answer

Cant get an image.Is it right that the view finderimage is upside down


The image of all astronomical telescopes are upside down (SCTs are upside down and reversed). RACI (right angled, correct image) finders do produce a right-side up image. For daytime use a erect image prism eyepiece.
Follow below instructions (except 7 in your case)

  1. Get Stellarium or another fine astronomy program
  2. During the day, point the telescope at a part of the landscape about 100 yards away.
  3. Use the lowest power eyepiece (highest number) in the focal tube.
  4. Center the landscape object in the telescope.
  5. Align the finder scope so that it points exactly where the main telescope is.
  6. At night, leave the scope out to reach thermal equilibrium (about an hour for small reflectors and refractors)
  7. If the scope is on a EQ mount, polar align.
  8. Point the finder at the moon. The moon should be in the main scope also.
  9. Practice finding the moon before you start on the planets
  10. Once you are comfortable with the moon and planets, you can go for the deep sky objects

Feb 28, 2013 | Vivitar Viv-tel-76700 75x/350x Reflector...

1 Answer

Telescope image at an angle


You do not specify type/model of telescope but:
If it has a diagonal, loosen the set screw holding the diagonal and rotate until image is upside down.

Dec 26, 2012 | Optics

1 Answer

My telescope images are upside down, how do i correct this?


ALL astronomical telescopes show upside down images, it's normal. Nothing is wrong with your telescope.

For terrestrial viewing you can buy an "erecting prism" which will turn the image right side up.

Like this one:

http://www.skiesunlimited.net/index.php?CategoryID=98


Read my Frequently Asked Questions TIP on my profile page.

Aug 03, 2010 | Fieldvision 114mm Reflector (114 x 114mm)...

1 Answer

Upside down image


All astronomical telescopes have upside down images. NO up or down in space. You can purchase an "erecting" diagonal, but it will cost almost as much as your telescope.

Google "erecting prism telescope".

Oct 15, 2009 | Bushnell Voyager 78-9970 Telescope

1 Answer

When viewing everything is upside down.


Yes, all astronomical telescopes show images upside down. There is no up or down in space.

Sep 01, 2009 | National Geographic 76AZ (525 x 76mm)...

1 Answer

Upside down images on my telescope. Bought used -no manuel. What to do?


In a refractor images are upside down as with most telescopes. You need an image erector to create a normal correct R and L and Up and Down image. It is a lens which goes in front of the eyepiece to give a correct image.

Jun 01, 2009 | Fieldvision 114mm Reflector (114 x 114mm)...

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