They performed observations of sunspots with better astronomical instruments.

The 28-member Kepler science team also is performing follow-up observations on a specific set of 400 objects of interest.

He worked with John Herschel until 1838, performing a survey of the southern sky, and continued to perform important astronomical observations over several more decades.

Also, smaller space missions will perform specialized infrared observations.

He also performs complementary observations at other wavelengths.

One method is by testing each input condition and performing observations of the outputs.

Its instruments performed lunar observations to within 25 minutes before impact.

They can also discover comets, and perform regular observations of variable stars.

In self-inspection, the architect assumes the responsibility of performing the controlled inspections and observations.

A fourth failed a few weeks before the mission, rendering the telescope incapable of performing scientific observations.