The Jewel Box (NGC 4755) sketched by Chris Schur with a 6-inch f/5 reflector at 61x from Calaundra, Australia, in April 1986.
David J. Eicher library
To learn more about astronomical sketching, Astronomy magazine subscribers can access my Astronomy.com video "Sketching from the telescope" and read Glenn Chaple's Observing Basics column "Sketching 101."
See the rest of the Sketching at the telescope series.