With the lateness of this post, let me simply summarize that he was an important enough astronomer, specializing in comets, to have a visitor center named after him. The visitor center/museum is definitely an after thought. The exhibits look like they have received little attention in ten or more years. The facility’s main function seems to be administrative; plus there are radio telescopes at the site, (see link above) and the parking lot is used by telescope enthusiasts for “star parties.”
We had the pleasure of visiting a star party on our previous visit — star gazers showed off their impressive telescopes. One had a telescope that measured about five feet around and a dozen feet high. I asked him where he kept it at home. He admitted it was a bit of an issue with his wife. A wonderful telescope, though.
The Whipple facility is within sight of the Mount Hopkins observatory, which is generally not open to the public, and being perilously perched on top of a mountain, not really accessible.