Too clean, too sharp. Looks more like a Remastered screen cap to me. No - your Enterprise is way better than theirs.
Then again, we didn't have hi-def back in 1966, so you have to take that into account, too. Maybe just a hint of overall blur or a very slight de-focus to better emulate the ol' NTSC video standard, and I think you'll have it nailed.
Outstanding effort, though. Another job well done.