With permission from my cousin, who has been organizing the Family & Friends Great Eclipse CampOut ...
I have been preparing star charts for my effort at reproducing the “Eddington Experiment” (see my struggles with this at
The “Modern Eddington Experiment”), which depends on observing stars near the sun. As I looked at the sky simulations I noticed that there will be some much more interesting features in the sky.
In particular, at least four planets will be bright enough to see during the eclipse: Jupiter, Mercury, Mars and Venus. And they will all be found along a single line across the sky: the ecliptic, the apparent path the sun takes across the sky, and all the planets follow.
I’m including a chart of the sky during eclipse. One planet I will be looking for is Mercury, which is so close to the Sun that it can only be seen a few minutes after sunset or before sunrise, just a few degrees above the horizon (which is usually clogged with trees and clouds).
During the eclipse, it will still be only a few degrees from the Sun, but the Sun will be high in the sky: near noon! You will never see Mercury at this elevation again!
You will also see Regulus, the brightest star in the constellation Leo, very near the Sun itself, and one of the reference stars I will be using in my Eddington measurements.