Here is something to put our humble efforts into perspective.
Stevie does a bit of star gazing using her birding scope, and so gets a couple of monthly magazines. In the readers gallery of one of her latest is a full page well detailed image of the moon about 1/2 phase.
Quote " The moon is a difficult subject for astronomers because of the low contast among its surface features. This 42-image mosaic captures the full face in great detail. ( 9.25 inch Celestron Schmidt-Cassegrain telescope at f10, ToUcam Pro webcam. For each of the 42 images, the imager selected and stacked the best 20-30 frames out of 500. ) "
My reading of this suggests then that the final composite is made up from the best of 21,000 frames.
Don