I'm an astronomy enthusiast in highschool. A partial solar eclipse will be visible from my country in 9 days, but it will take place during a school day. What are some projection methods that'll provide me the same image quality and size as using binoculars/scope would, without actually using either? I already have eclipse glasses, but not enough of them as I was put in charge of eclipse viewing that day. I've seen articles about mirror projection, but I would it be as sharp, large and bright?

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    $\begingroup$ See astronomy.stackexchange.com/a/21099/16685 You can also use pinhole projection, but if you want a sharp image, the image will be fairly small. Also see popastro.com/main_spa1/using-a-mirror-to-view-a-partial-eclipse $\endgroup$
    – PM 2Ring
    Commented Oct 16, 2022 at 11:45
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    $\begingroup$ Nothing will give you as sharp of an image as you'd get through a telescope, but there's really not a lot of detail to see, so a pinhole projection will show nearly the same image as a telescope. You might want to think about what to project on to, a bright white surface you can move around, like a piece of foam core would be great. But another piece of cardboard like a notebook cover will do fine in a pinch. $\endgroup$ Commented Oct 16, 2022 at 14:44
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    $\begingroup$ FWIW, the New Moon is at 2022-Oct-25 10:48:42 UTC, the maximum eclipse is ~11:00 ssd.jpl.nasa.gov/api/… $\endgroup$
    – PM 2Ring
    Commented Oct 17, 2022 at 18:54


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