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How does a radio telescope work?
(
astrosurf.com
)
1 point
by
pmontra
on March 8, 2021
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past
The design and building of a large dish antenna rotor
(
astrosurf.com
)
45 points
by
lelf
on Feb 16, 2019
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2 comments
Homebrew dome projector for planetarium using two stock lenses
(
astrosurf.com
)
4 points
by
jacquesm
on Oct 7, 2014
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past
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