Comet Halley sketched by Gary T. Nowak of the Vermont Astronomical Society using a 16-inch f/4.5 reflector at 75x, August 10, 1985, from West Oak Hill, Williston, Vermont.
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.