Where does “tähtiteleskooppi” come from?

tähtiteleskooppi (Finnish) comes from Finnish tähti, from Swedish täkt, from Swedish tå, from Swedish taga, from Old Swedish taka, from Old Norse taka, from Proto-Germanic tēkaną, from Proto-Indo-European deh₁g- — to touch.

Ancestry of “tähtiteleskooppi”, step by step

tähtiteleskooppi traces back through two separate lines of ancestry.

via Finnish tähti

StepLanguageWordMeaning
1Finnishtähtistar; a famous person, celebrity, star; a white...
2Swedishtäkta quarry
3Swedishtoe; a body part
4SwedishtagaDated form of ta
5Old Swedishtakato touch, reach; to grasp, seize; to take, bring
6Old Norsetakato take; taking, capture; taking, seizing
7Proto-Germanictēkanąto touch; to grasp
8Proto-Indo-Europeandeh₁g-to touch

via Finnish teleskooppi

StepLanguageWordMeaning
1Finnishteleskooppitelescope
2Finnish-skooppi-scope
3Ancient GreekσκοπέωI look, look at, behold; I examine, inspect; 413...
4Ancient Greekσκοπόςwatcher, lookout; protector, guardian; spy, scout
5Ancient GreekσκέπτομαιI look at, examine; I examine, consider, think
6Proto-Hellenicsképťomaito look at
7Proto-Indo-Europeanspéḱyetito be looking at, to keep looking at
8Proto-Indo-Europeanspeḱ-to see, to look, to observe
Every word from Proto-Indo-European deh₁g-Every word from Proto-Germanic tēkanąEvery word from Old Norse taka