Gassendi Crater Sketch

Sketching and Equipment

For this sketch I used: Black Strathmore 400 Artagain paper, 9”x12”, white and
black Conte’ pastel pencils and a blending stump. The sketch was then photographed and posted here.

Telescope: 10 inch f/ 5.7 Dobsonian 6mm eyepiece 241x, equatorial platform
Date: 01-17-2019 4:25-5:45 UT
Temperature: 12°C (54°F)
Clear, calm
Seeing: Antoniadi II
Co longitude: 39.1°
Lunation: 10.8 days
Illumination: 76.1 %

Frank McCabe