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The EUI on the NASA/ESA Solar Orbiter recently captured the closest ever images of the sun. How is that made possible without destroying the imager?

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    $\begingroup$ it only removes its lens cover at night? $\endgroup$
    – uhoh
    Jul 17, 2020 at 5:54
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    $\begingroup$ @uhoh night when imaging the sun seems unlikelly :) I have a feeling that the solution involves a full spectrum ND filter (or a filter letting only som wavelengths through) thus limiting heating of the electronics, combine with a reflextive lens cap to avoid heating the filter and you should be fine $\endgroup$
    – lijat
    Jul 17, 2020 at 6:42
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    $\begingroup$ @lijat - I hear the Soviets have landed on the Sun - How did they do that without burning? - They landed at night! (old, old joke) $\endgroup$
    – gerrit
    Jul 17, 2020 at 7:07
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    $\begingroup$ By Jove @uhoh, I...I think you've got it! $\endgroup$
    – GdD
    Jul 17, 2020 at 10:04
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    $\begingroup$ How do welders attach two pieces of metal without destroying their eyes? How can people watch solar eclipses without destroying their eyes? The answer is simple: Use a filter that block almost all of the incoming light. $\endgroup$ Jul 17, 2020 at 11:01

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