The Apollo Telescope Mount (ATM) served as the first manned astronomical observatory in space. It was designed for solar research from Earth orbit aboard the Skylab. This image is a cutaway illustration of the ATM canister. The ATM was designed and developed by the Marshall Space Flight Center.
NASA/MSFC
circa 1971 <div style="display: none;">date QS:P,+1971-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external free" href="https://images.nasa.gov/details-0101323">https://images.nasa.gov/details-0101323</a> (<a rel="nofollow" class="external text" href="https://images-assets.nasa.gov/image/0101323/0101323~orig.jpg">image link</a>)