Question about Tasco Galaxsee 45-060675 Telescope

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Is inverted image normal

Would like to use my telescope for terrestrial viewing I bought it at a flea
market, I cleaned it as best I could inside and out. I don't think I put back
together wrong. Does it need another lens or something to re-invert the image? I know very little about this telescope but I have looked at the moon with it, that's pretty cool, but I have not had much luck looking at stars or planets. Please help out this novice. Thanks.

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Most astronomical telescope show upside down images-- no problem as up or down do not exist in space!

You can buy an "erecting" diagonal for terrestrial use.
http://www.telescope.com/control/product/~category_id=diagonals/~pcategory=accessories/~product_id=08787

Posted on May 15, 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

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When I look through the view finder--everything is upside down???


Astro telescopes normally do show an inverted image, since for most purposes this does not matter. For terrestrial viewing, such as thru someone's window, you can buy an "erect image" or "correct image" prism which gives an upright image.

http://www.optcorp.com/telescope-accessories/optical-tube-accessories/diagonal-prism-eyepiece-holder.html?a_diagonal_design_f=1090

I don't know of such a thing for the finder scope, you would have to buy a new finder.

http://www.optcorp.com/celestron-9x50-illum-ra-correct-image-finderscope-93781.html

Mar 06, 2014 | Celestron NexStar 114GT (269 x 114mm)...

1 Answer

Image showing upside down


It is normal for astro telescopes to show an inverted image. It may seem odd but this is the case. It does not matter when viewing stars, but occasionally it is a problem eg for lunar viewing.

Therefore, and for land "terrestrial" viewing, you can fit in an "erecting" or "correct-image" prism

http://www.optcorp.com/open-box-orion-45-correct-image-prism-diagonal-1-25inch-07216-7037.html

There are many brands, some more expensive, for photography

http://www.optcorp.com/ba-amici-2-2inch-90-erecting-prism-star-diagonal.html

Nov 28, 2013 | Celestron AstroMaster LT 76AZ Telescope...

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Image is inverted .


Yes, this is normal for an astro telescope. It is not considered important when viewing stars and so forth.
You can buy a terrestrial viewing prism to correct this
http://www.optcorp.com/product.aspx?pid=150-12607

May 04, 2012 | Coleman CBD767AZ1 Astro-Watch D76mm x...

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I look through my 6mm vivitar lens and the view is almost upside down?


All astronomical telescopes show upside down and or inverted images-- it's completely normal. To use this for terrestrial viewing (klijke a spotting scope) you will need to buy the correct size erecting prism diagonal similar to this one:

http://www.agenaastro.com/william-optics-1-25-45-erecting-prism-diagonal.html

Jul 04, 2011 | Vivitar (1607225) Telescope

1 Answer

Hi there, I am having a problem with a Tasco 40-076420H telescope in that the image is on an angle. Any suggestions?


All astronomical telescopes show inverted images-- it is completely normal. If you want to do terrestrial viewing you need to buy an "erecting diagonal", like this one:

http://www.astronomics.com/main/Image_Erecting_Prisms.asp/catalog_name/Astronomics/category_name/EDNECFUVSRWS8KLNTU5E38XSE1/Page/1

Read my tips on my profile page.

May 15, 2011 | Tasco Luminova 40114675 (675 x 114mm)...

1 Answer

The image that I see is upside down. How do I fix the problem


All astronomical telescopes have upside down images. This is normal and your scope is NOT broken.

You can buy an "erecting prism" diagonal which will invert the image for terrestrial viewing. Here is a link, but you must measure the hole in the telescope as they come in .965, and 1.25 inch sizes.
http://www.buy.com/prod/-928-45-degree-erecting-prism-for-schmidt-cassegrain-refractor/q/listingid/35841593/loc/111/203347786.html

Astro-telescopes would need extra glass to invert the image further dimming the images you see in the eyepiece for those very dim night sky objects. Read my Frequently Asked Questions TIP on my profile page. Your question is one of the most asked questions in the Telescope Topic.

Nothing is wrong with the telescope-- buy an erecting prism for day time viewing and use.

Apr 30, 2010 | Optics

1 Answer

Want to see images right side up


You do not need an erecting prism to view objects at night. These are used if you wish to view terrestrial objects since it turns them right side up.

If you have a reflecting telescope (it uses mirrors) it's normal to not use an erecting prism or as they are also known as star diagonals. Objects will appear inverted and that's normal. A refracting telescope (no mirrors, just lenses) will also invert the image but it is quite often used with a star diagonal to make it easier to view. There are many other types of telescopes that use a combination of mirrors and lenses.

I hope this helps.

-jodair

Mar 29, 2009 | Optics

1 Answer

Just bought a cheap, used Tasco telescope. Images


I'm not sure what type of telescope this is (refractor, reflector, etc.) but it's normal for most telescopes to have inverted images. There is no up or down in space so it doesn't really matter when you view an astronomical object. You just want to keep that in mind if you use a moon map so that you can get the correct orientation. However, you can get moon maps with inverted images.

If you wish to view land or terrestrial objects you can purchase an image erecting prism to turn everything right side up. Depending on the telescope it may reverse the images from left to right when it does this.

I hope this helps.

-jodair

Mar 28, 2009 | Tasco Optics

1 Answer

When i look through the lens everything is upside down.


It is normal for a telescope to invert the image. There is no up or down in space so for astronomical use it does not matter.

The reflector telescope is not generally used for terrestrial viewing. However, image erectors can be purchased and are inserted before the eyepiece. This would make everything right side up.

-jodair

Mar 09, 2009 | Edu-Science (10166) Telescope

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