I measured LUX at my 2023 annular observing site with the same sensor and setup that I used to measure LUX at the 2019 total solar eclipse. I point an ambient light meter at the observing area (not at the Sun). The goal is to measure what people are experiencing regarding the light. At C1, the observing area LUX was similar in 2019 and 2023. The lowest LUX recorded at the annular was 865.98. A tremendous drop in illuminance, but since it occurs over 86 minutes, our eyes can dark adapt, and we perceive very little change in the difference in ambient lighting. At the annular eclipse, I perceived a difference in the "character" of the light, but I can't say that I thought it was darker. During totality in 2019, the LUX dropped to 1.97, with a total duration of 2m 30s and an umbra width of 88 miles. The 2024 total eclipse should be slightly darker. For more information visit my website. (LUX chart credit Wikipedia)
Edited by foxwoodastronomy, 21 October 2023 - 06:55 AM.