In the question How fast do optical surfaces get dirty or damaged in space? I've written:
Answers to Accumulated environmental damage to Hubble main mirror are inconclusive, and this (deleted) answer to the question Do we have a photo of a micrometeorite impact on a lens? shows a Tim Peake tweet of a meteor impact on a window of the ISS, which for the purposes of this question won't qualify as full fledged optical surface, part of an optical system.
Is it impolite to link to the deleted answer in this way? I can think of two ways that it could be:
- the author of the self-deleted post deleted it and doesn't want (many) people to see it (though higher rep users still do)
- lower rep users can't see it and may then feel "left out" because something referred to in my question is being withheld from them.
I've done it this way to give credit to the user who made the post and found the resource, and to increase visibility of the information within the post to at least some users.