Copernicus HGSS (hgss.copernicus.org)

Investigator (STEP I), run 2026-10-08. Saved page text (evidence trail, not for publication) is in research/pages/. Findings are leads, not verdicts.

Searched

Google: Capron 1883 "Lemstrom's auroral experiments in Lapland" adsabs (gave the HGSS paper and the ADS link to Capron 1883, Observatory 6:259)
Fetched: https://hgss.copernicus.org/articles/15/17/2024/

Nevanlinna and Tanskanen, "Early auroral photography and observations at the Sodankylä ...", Hist. Geo Space Sci. 15, 17-25, 2024: "Professor Selim Lemström (1838-1904) (University of Helsinki) published descriptions of several auroral and telluric current experiments carried out at the Sodankylä observatory during the first polar year in 1882-1884 (Lemström, 1883, 1885; Simojoki, 1978)." The paper is mostly about 1927-1933 photography (Størmer).

Claim 6: confirms the setting (First International Polar Year, Sodankylä) and gives the primary references (Lemström 1883, 1885) and a historical review (Simojoki 1978) to obtain. Partial: the paper does not evaluate the 1882 streamer.