The circular patch is one of the most detailed of the Apollo series.

Above was a circular patch of sky, cloudless and clear.

And in their center was a circular patch of daylight; but the light had a stretched, yellow quality to it, like a forced smile.

In a rich star field was a large, almost exactly circular, dark patch.

A circular patch with a single feed point will create linearly-polarized radiation.

There were the vaguely circular patches of brightness against the stars.

A roughly circular patch of ocean was going dark as if a cloud were casting a shadow.

Small, circular patches may appear on the back and neck several days later.

A circular patch on the crown of the head.

Amid a circular patch of yellow flowers he stopped and slightly elevated his eyes.