For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.
I”m surprised they don’t say what telescope photographer Eric Holland used. The APOD site has a link on “Palo Alto, CA” and (of all things) it takes you to a really nice drone flight by Eric over the Palo Alto Baylands and Duckpond where I’ve hiked many times.
The Foothill College Observatory in next-door Los Altos Hills has an observatory with a 16-inch computer-controlled Schmidt-Cassegrain reflector, but I doubt Eric had access to that for a photo.