Yes that looks like it except it wasn't a secondary focuser. Much larger telescope too (I'm guessing 8 inch) with a viewfinder. I think it was a Celestron scope, as not only does it say the eyepiece is one, but later in the movie there's a scene where he's teaching his class and there's a nice line up of Celestron's (NexStar's etc). Product placement.
Interesting eyepiece.