It is used for both astronomical and solar observations.

Additional success was achieved with solar observation and research of the magnetosphere, among other areas.

His database extended only to 1700, although the technology and techniques for careful solar observations were first available in 1610.

The crew also made solar observations, recording about 75,000 new telescopic images of the Sun.

It was modified to allow solar observations in 1989.

"You're going to begin solar observations for flares in your first period after this meal?"

For solar observations, filters allow direct observation of the sun.

For more information see History of solar observation.

The solar observations he made would have told him he was off.

It is time for a new series of solar observations.