Started the 1808 mystery eruption
Checked that it is still unsolved. Read the two main studies (Guevara-Murua 2014, Timmreck 2021) and noticed neither uses lunar eclipses. Pulled NASA's eclipse list for 1808 to 1811 and found four usable eclipses. Found the Bogota weekly that Caldas edited on the Internet Archive and read his original haze note and his report on the eclipse of 9 May 1808: a normal orange-red Moon, our 'before' picture. Ferrer's timing of the same eclipse from Havana agrees. Searched American and German journals for the later eclipses without success yet.