But for science, when accurate identification of species is the goal, a visual sighting may not be enough.

"Though the reports will begoing at light speed, so they won't get there before visual sightings of us can take place from the base. "

As you instructed, we'll remain out here, roughly five miles from land, beyond visual sighting if the light's right.

Even though his camera was picking up everything, he had to try and get a visual sighting on one of the airplanes.

They'd obviously be restricted to visual sighting since they don't have anything like radar.

He continued to track the blip and finally got a visual sighting a few minutes later.

They would use every aid possible for visual sighting and instrument detection.

To someone near enough to get a visual sighting, however, it would look like what it really was: the Enterprise.

You should have visual sighting of them at any time.

The display went out, everything got quiet and then a visual sighting was made in the same portion of the sky.