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 '20 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 '20 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 '20 at 7:07
  • $\begingroup$ by working within its design parameters $\endgroup$ – user20636 Jul 17 '20 at 9:35
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    $\begingroup$ By Jove @uhoh, I...I think you've got it! $\endgroup$ – GdD Jul 17 '20 at 10:04

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