Spectrographically

He used the results produced by Vesto Slipher at Flagstaff observatory which showed, spectrographically, the recession of objects. ❋ Unknown (2009)

It is of course less easy to determine the content of an inactive than of an active marker, but this can be done by determinations of density or mass-spectrographically. ❋ Unknown (1964)

Campbell vainly looked for them, [986] visually in 1894, spectrographically in 1896; Keeler was equally unsuccessful; [987] ❋ Unknown (1874)

The installation, in 1900, of a photographic refractor 31-1/2 inches in aperture, coupled with a 20-inch guiding telescope, will enable Dr. Vogel to investigate spectrographically some hundreds of stars fainter than the second magnitude; and the materials thus accumulated should largely help to provide means for a definite and complete solution of the more than secular problem of the sun's advance through space. ❋ Unknown (1874)

Thirty-two Wolf-Rayet stars were investigated, spectroscopically and spectrographically, by Professor Campbell with the great Lick refractor in 1892-94; [1405] and several disclosed the singularity, already noticed by him in Gamma Argûs, of giving out mixed series, the members of which change from vivid to obscure with increase of refrangibility. ❋ Unknown (1874)

The magnitudes of the stars in the Draper Catalogue were determined, so to speak, spectrographically. ❋ Unknown (1874)

And technologists from Rhevision have developed an artificial nose-a piece of porous silicon that changes colors in the presence of certain molecules, which can be read spectrographically. ❋ Unknown (2010)

1895, October Nova Carinæ spectrographically discovered by ❋ Unknown (1874)

1895, Dec. 12 Nova Centauri spectrographically discovered by ❋ Unknown (1874)

1889 Eclipses of Algol demonstrated spectrographically by ❋ Unknown (1874)

1895, April Constitution of Saturn's rings spectrographically demonstrated by Keeler. ❋ Unknown (1874)

Nova Persei was spectrographically recorded in 1887.] [Footnote 1501: Vogel, _Sitzungsb. ❋ Unknown (1874)