Civilisation development level presented in "The Inner Light"

What is the exact civilisation development level presented in "The Inner Light" episode?

I'm confused, because:

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  rocketry is there at the very beginning level, but building devices that extracts water from air is considered too cost to much time and resources (and that idea is eventually dropped),

  
  


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  they have artificial (electric?) light and their doors opens automatically, by pressing a button, and yet, a telescope build by Picard looks like a random pieces of cardboard glued together with some randomly chosen glass pieces.

  
  

It certainly looks too huge and isn't very comfortable to be used. I'm getting the feeling, that we had much, much better telescopes (smudge shape, metallic) years before we invented electric light and automated doors systems.

After many years since I watched this entire episode, I have recently watched, by an accident, just these last parts, where very old Picard is carefully examining sky above him (to find out, that their star is going supernova). And I assumed, that this civilisation development level is around XVII century (when first telescopes were designed on Earth). But, right after that my wife reminded me, that they also had electric light and doors,which doesn't actually fit before twentieth century. And -- of course -- beginning of rocket era.

So, do we have anything, on which we can base assumption, what is the civilisation development level presented in that episode?