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Erin Anne
Erin Anne
03:00
@uhoh this video
This Invention Made Disney MILLIONS, but Then They LOST It!
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called this answer
2
A: What was the function of the Apollo Sextant Beam Splitter?

uhohIf this answer has value it's because it's standing on the shoulders of blobbymcblobby's giant answer! :-) The question asks: What was the function of the Apollo Sextant Beam Splitter? and it seems to be inescapable based on all the diagrams in the question and blobby's answer that it combines ...

to mind
 
2 hours later…
uhoh
uhoh
05:07
@ErinAnne hmmm... history, optics, and Disney - looks interesting! I'll take a look :-)
 
6 hours later…
Erin Anne
Erin Anne
11:05
I'm hearing on Mastodon that such filtering beam splitters are common in astronomy exactly to get rid of sodium vapor light from streetlamps
huh

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