eddington4

Sketching:

For this sketch I used: black Strathmore 400 Artagain paper, white and black Conte’
pastel pencils and a blending stump. After scanning, Brightness was slightly decreased (-3) and contrast increased (+3) using Microsoft Office Picture Manager.

Telescope: 10 inch f/ 5.7 Dobsonian and 9 mm eyepiece 161x
Date: 6-17-2008, 2:55-3:50 UT
Temperature: 19° C (67° F)
Clear, transparent, calm
Seeing: Antoniadi III
Colongitude 72.7 °
Lunation 13.4 days
Illumination 98 %

Frank McCabe