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This 1943 Popular Mechanics article is about air navigation training
during the war. The first photo shows someone taking a sun shot. The
sextant appears to be an A-12, which is a little awkward in an astrodome
since you look down into an A-12 to shoot the Sun.

"Under average flying conditions, the navigator on an ocean flight of
thousands of miles can determine the position of his plane within five
or 10 miles. With his sextant, which the navigator considers almost as a
third hand, he takes his position from a star directly along the line of
flight or directly to the right or left of the plane. He makes at least
nine shots and takes the average. His guideposts are 52 trustworthy
stars that don't choke off their 'beams' when the air raid sirens sound."

(A few years ago I posted a link to a similar article, but that was a
different magazine.)

https://books.google.com/books?id=WNYDAAAAMBAJ&pg=PA40&source=gbs_toc_r&cad=2

The site loads the whole magazine. If you don't have the bandwidth to
support that, it's a good idea to disable Javascript. You can still view
the pages one at a time.

   

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