Optimum entrance apertures for spectroscopy of redshifted galaxies

Details Optimum entrance apertures for spectroscopy of redshifted galaxies Optimum entrance apertures for spectroscopy of redshifted galaxies

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975pasp...87..541g&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 87, Aug. 1975, p. 541-544.

Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Galactic Radiation, Red Shift, Signal To Noise Ratios, Apertures, Brightness, Deceleration, Optimization

Scientific paper

Optimum entrance apertures, based upon signal-to-noise ratio considerations, are derived for spectroscopy of redshifted galaxies. Signal-to-noise ratio is found to decrease slowly for apertures larger than optimum and to depend strongly on redshift. The optimum apertures decrease with increasing redshift and depend slightly on the deceleration parameter.

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