Darwin and Lamarck on the Sunrise Terminator

Sketching and Equipment:
Black Artagain sketching pad, white and black Conte’ pastel pencils, white Pearl eraser, blending stumps
Telescope 16” f/4.41 Dobsonian telescope on an equatorial drive platform at 199x with 9mm eyepiece
Date: 10-12-2019, 04:05 - 05:50 UT
Temperature: 27°C (80° F) clear, calm
Seeing: Variable, mostly Antoniadi III(fair)
Colongitude: 68.7°
Lunation: 13.1days
Illumination: 96.4%
Frank McCabe