I've persuaded myself that I saw detail on Ganymede once with an 8" apo, but it may have been one of those "Jesus in the toast" moments :)

I think mostly it would depend on the seeing

All the best

Tim

Very nice!!

hmmmm....i suspect thats mostly noise enhanced to look like features.  i;d be interested to see it compared with the known terrain visible at that time - winjupos?

Great catch!

Dude I wrighted that its not my photo.

I compared it with what appears in Celestia and the features match.

A rough calculation suggests a telescope that size puts 50% of the light into a spot 0.5" across.  This image shows details down to about 0.2"

Amazing, but just about possible!