Astrometric comparisons of quasar catalogues
نویسندگان
چکیده
منابع مشابه
Astrometric demands of fibre-input spectrographs for wide-field quasar redshift surveys
A potential problem with using wide-field multi-object spectrographs for quasar redshift surveys is the introduction of positiondependent selection effects into the survey catalogue because of variations in the observed signal-to-noise ratio (SNR) across the survey area. A function relating signal losses in instruments using optical fibre input to the fibre-to-image position error, the fibre di...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2008
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20078427