(I quite literally can't remember the last time I counted words in an opus of my own creation, other than to form a ballpark estimate of word-count for the purpose of negotiating my editor's fee.)
With small presses, they often have an 80,000-word maximum on novels, which I had to struggle to keep my
Arachne books within. And my novella "Aleyara's Flight" in the current issue of
Analog and its upcoming sequel "Skin in the Game" both come very close to the approximate 20,000-word limit specified in its guidelines (though they take serials of 40-80,000 words).
With my
Star Trek novels, there was a lot more flexibility. There was always a target length in the contract, typically 100,000 or 85,000 words, but there was leeway of up to maybe 20% in either direction.
Still, it's generally a good idea not to be self-indulgent, and to trim any story or novel down to the minimum length it needs to be. When I revise a first draft, I'm often surprised by how much needless verbiage and repetitive content I end up cutting out. Stephen King's book on writing recommended cutting every first draft by around 10%, but I've rarely managed that (though I surpassed it with
Only Superhuman, cutting it from over 130,000 words down to about 115K).
re the Energy Probe: the practical xenon light strobe used on the bridge set was Abel's, but the mylar mirror trick to squeeze the thing out of shot and the clumsy slot-mask animation supered atop was done later, I think by Apogee
I used to have the impression, or the belief, that it was a split screen shot -- that first they filmed it with a stagehand holding the light on one side, then filmed it again with the light held from the other side, and matted them together, hence the misalignment.
The one for-sure-done-by-Abel effects sequence that I know made it to the film is all staggered streaking seen in the bridge during the wormhole.
Which was very well-done.