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    Default Can you go blind looking at a full moon through a telescope?



    Can you go blind looking at a full moon through a telescope? Are there any telescopes in the world that are big enough to blind a person looking at a full moon? Even with my 7x50 binocculars the full moon seems pretty bright.

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    no. it might be bright enough to make your vision go a little spotty if looking through a telescope that focused it really well, but nowhere near bright enough to blind. even the sun can take hours to blind you.

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    Quote Originally Posted by Nate M View Post
    no. it might be bright enough to make your vision go a little spotty if looking through a telescope that focused it really well, but nowhere near bright enough to blind. even the sun can take hours to blind you.
    Through a telescope or binoculars however - the Sun can blind you almost instantly.
    NEVER be tempted to try it without the correct type of filter over the front of the objective
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    You can get a temporary black spot but it will go away. Your eyes will not be (permanently) harmed.

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    Quote Originally Posted by TambourineMan View Post
    You can get a temporary black spot but it will go away. Your eyes will not be (permanently) harmed.
    By looking at the moon .
    As carlos was saying ,,NEVER look directly at the sun ...
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    Quote Originally Posted by water_skipper View Post
    Can you go blind looking at a full moon through a telescope? Are there any telescopes in the world that are big enough to blind a person looking at a full moon? Even with my 7x50 binocculars the full moon seems pretty bright.
    What looking at a bright moon will do is produce spots in front of your eyes and completely spoil your night vision for half an hour. When using telescopes you can screw neutral density filters into the eyepiece. Not so easy with binoculars though.

    As has been stated by others: Don't ever look at the Sun even with the naked eye while wearing sunglasses. Permanent damage is easily possible and there are no pain nerves in the retina to force you to close your eyelids rapidly enough to protect yourself. Damage can be permanent and instantaneous. Don't ever use eyepiece solar filters either. They can shatter when exposed to the focussed heat of even quite a small instrument.

    Baader Solar foil is the easiest stuff to use if you are interested in looking at the Sun. It produces safe and beautiful images of the Sun and its spots when handled properly. Filters can be made out of cardboard or plastic tube fitted with Baader Solar Foil to fit binoculars or telescope objectives snugly. Cover the finder or you might might be tempted to look through it to centre on the Sun! Don't try to use alternatives like space blanket! They aren't safe!

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    Rich, thanks for that critical clarification. I meant you get temporary black spots by looking at the moon, not the sun. This thread was about the moon and I was responding to that and did not realize my response could have been misinterpreted as referring to the sun.

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    I have actually used sunglasses while observing the moon (moonglasses?). They eat up some eye relief, though.

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    We should make a full aperture filter for looking at the moon , We could call it scope shades . LOL
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    I rarely look at the moon, but when i do i use a small scope or mask the aperture (even with a cardboard with a hole in it :P)

 

 
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