Below
is a typical Digimizer
measured image (inverted for clarity), the Moon's
semi-diameter was calibrated to 0.2595 degrees and the best fit
circle gave an umbral semi-diameter of 0.617 degrees.
You can see the computed Topocentric values of Fi the umbra
semi-diameter and Jay Pasacoff's image
measurements compared
here.
For a full explanation of this project click here.
For a full explanation of this project click here.
Produced
by the Isabella
Plains Lunar Observatory Australia, 20080929.