Multiple telescopes are sometimes independently pointed at the same object, either to increase the total light-gathering power, or to provide simultaneous observations with complementary instruments.

The panel said there is a scientifically "convincing" need for simultaneous observations from several instruments together.

But, he pointed out to his fellow scientists, his critical need was for more "simultaneous observations."

An alternative method was the simultaneous observation of occultations of stars at different observatories.

I cannot convey the sense of simultaneous observation that I felt.

To perform, wherever possible, coordinated and/or simultaneous observations of X-ray objects with other observers.

The two made simultaneous observations of Mars and, by computing the parallax, determined its distance from Earth.

It is suited for simultaneous observations with ground-based observers who prefer to observe sources at opposition.

You can study a set of drawings together, but you cannot easily make simultaneous observations on numerous tiny specimens, all needing magnification.

Impact flashes from such events have been detected from multiple and simultaneous Earth-based observations.