I have kept this idea at bay for several years, as well as any attempt at implementing it. Here at least is the idea and pehaps letting it out may motivate me to implement it.
The idea is to set my video camera pointing straight up and using the Interval-Record option acquire a set of images for comparison. Most camera tripods - and home telescopes as well - do not permit travel far enough to point the instrument at the Zenith, so I have to come up with a little support table yet.
Part of my thinking is that the atmosphere is at its "narrowest" when looking straight up, so whatever I photograph is less susceptible to atmosphereic optical effects. Another part is that few if anyone is doing this.

Whether you have an optical instrument or not, looking straight up is uncomfortable and/or requires special support & patience.
So, the idea is out & I may or may not implement it. I offer it for your consideration.

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semantics is not always just pedantic quibbling. ~ douglas r. hofstadter