Reading the classic astronomy book "Mijn Sterrenwacht" from Piet Meesters

 Very nice to read in the classic book. It is written by one of the most famous Dutch amateur astronomers: "Piet Meesters".

 It contains many nice sketches. These are from Mars, by Flammarion.

This is inside Mr. Meesters' amateur observatory at Halfweg. He also built many (very sought after) telescopes himself.