I may have said this before, but I continue to be amazed by the original discoverers of some of the closer and more unequal pairs. Wilhelm Struve in particular. With a relatively small and primitive instrument (9.6 inches), he discovered some tough to see doubles. S.W. Burnham later did the same, some pairs discovered with only a 6 inch achromat. The only advantage these men had was the absence of heat islands and light pollution. They either called out their observations to an assistant or ruined their dark adaptation by writing them down by lamp or candle light. I suspect at least Struve may have employed a scribe.
Does anyone on here verbally record their observations and write them down later?