On using a space telescope to detect faint galaxies

Details On using a space telescope to detect faint galaxies On using a space telescope to detect faint galaxies

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..451w&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, May 1985, p. 451-453.

Astronomy and Astrophysics

Astronomy

11

Galaxies, Hubble Space Telescope, Spaceborne Telescopes, Nightglow, Point Spread Functions, Signal To Noise Ratios, Space Observations (From Earth)

Scientific paper

Observations using space telescopes should be optimized for conditions that prevail in space. Since the sky at 1 micron is very dark above the OH nightglow, and because distant galaxies are brightest at wavelength greater than 1 micron, the Hubble space telescope should be very good at detecting and measuring faint, distant galaxies in the R and I bands. For later-generation space telescopes the optimal wavelength for detecting high-redshift faint galaxies is the 3 micron window in the zodiacal light. Observations of faint galaxies in the 1-3 micron region will be less affected by evolution than optical observations, leading to a better determination of q0.

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