Reiner Gamma – the Pete Lawrence Challenge

I just watched the recent “Sky at Night” about the moon. On the program, Pete Lawrence challenged us to observe various lunar features. The hardest of these was Reiner Gamma, a lunar “swirl” (

That caused me to re-examine the window-sill lunar images I posted some months ago, and in particular the one of the 22-day moon.

So here is the same image with Reiner Gamma brought out. The joys of digital astronomy when clouded out! (and window-sill astronomy!)


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