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?

  • 5
    $\begingroup$ it only removes its lens cover at night? $\endgroup$
    – uhoh
    Jul 17, 2020 at 5:54
  • 1
    $\begingroup$ @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
  • 3
    $\begingroup$ @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
  • 1
    $\begingroup$ By Jove @uhoh, I...I think you've got it! $\endgroup$
    – GdD
    Jul 17, 2020 at 10:04
  • 1
    $\begingroup$ 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


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.