Which Lowell Observatory telescope is this? (used to draw Moon maps for the Apollo program) The Fox News article Arizona city played critical role in moon exploration history covers several interesting activities that took place in Arizona in preparation for the Apollo Moon landings.

It shows the telescope (shown below) and mentions that it was used to draw lunar maps.

Question: Is it possible to identify which telescope this is exactly? Is there some place where one can read more about it?

click images for full size viewing




  above: Lowell Observatory telescope used by scientists who collaborated with artists to map out the moon for Apollo astronauts (Fox News)


below: Screenshot from July 9, 2019 Fox News video NASA lunar legacy in the Arizona desert
That's the historic 24-inch Alvan Clark refractor.
It was installed in 1896 and restored in 2014-15.
Besides the moon mapping project, Percival Lowell used it to observe Mars, and Vesto Slipher used it for some of the first measurements of galaxy redshifts.
Its current mission is education; in mild weather the observatory lets visitors look through it.

Roger Vine's Scope Views has more photos and a detailed description.