In 1868 a prominent yellow line was observed in a spectrum taken near the edge of the Sun.

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

Most scholars viewed the acquisition of advanced knowledge and skills across a wide spectrum of academic fields as extremely beneficial once taken back to China.

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

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

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

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

A spectrum taken of the burst's optical afterglow on 6 April 2003 showed peaks at approximately 570 nm and 470 nm.

Eta Andromedae was discovered to be a double-lined spectroscopic binary in a series of spectra taken in 1899 and 1900.

The very first spectrum taken at any wavelength focused on the ν (CH stretch) ro-vibrational band in the infrared.