The goal of this five-year survey was to take images and spectra of millions of celestial objects.

OSIRIS takes spectra in a small field of view to provide a series of images at different wavelengths.

Visible-light camera and spectrograph with the ability to take spectra of up to 100 objects simultaneously, mounts on the Cassegrain focus.

Infrared spectrograph using movable fiber optics to take spectra of up to 400 objects simultaneously.

Apart from his theoretical work, he also went on several foreign expeditions to observe solar eclipses and take spectra of stars.

When multi-variate techniques, such as Principal Component Analysis are used, it is necessary to take several spectra at varied offset distances.

He would rather have been taking spectra, reading ionoscopes, gulping gas and dust samples from outside into his analyzers, every centimeter of the way.

Already, researchers are planning new ground- and space-based instruments to take spectra of the atmospheres of some of those habitable planets.

Mariano & ring (1975) took spectra from feldspars on a Nuclide Luminoscope .

There is an alternate method for taking spectra (the "dispersive" or "scanning monochromator" method), where one wavelength at a time passes through the sample.