"And it's in the diary that he used the sextant to shoot sun angles."

The feature is 1.5 kilometers (one mile) across, with the sun angle at approximately 20 degrees.

The sun-path and vertical sun angles throughout an entire year are important to note.

"Look at the sun angle," the man said derisively.

Which satellite is in operation depends on the sun angles and consequently the seasons.

There are some bright patches that are most clearly visible under a high sun angle.

By the comparative sun angle of the pieces that had been closely identified, the computer was able to give close bearings on all the segments.

The low sun angle put the forested highlands into jagged relief.

The main problem was overestimating the depth of craters, so as to make them have shadows at higher sun angles.

Another factor can be the sun angle during day games.