Quasar Redshifts from S-CAM Observations: Direct Colour Determination of ~12 Gyr-old Photons

Details Quasar Redshifts from S-CAM Observations: Direct Colour Determination of ~12 Gyr-old Photons Quasar Redshifts from S-CAM Observations: Direct Colour Determination of ~12 Gyr-old Photons

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ingn....6...14d&link_type=abstract

The Newsletter of the Isaac Newton Group of Telescopes (ING Newsl.), issue no. 6, p. 14-16.

Astronomy and Astrophysics

Astronomy

Quasars, Scam

Scientific paper

CCDs have revolutionised astronomy in the last quarter of the 20th century, yet measuring energy distributions of celestial objects still requires the indirect methods of filter photometry or dispersive spectroscopy. The development of superconducting tunnel junction (STJ) detectors has opened up the possibility of measuring individual optical photon energies directly. The first time-and spectrally-resolved observations of cataclysmic variables and pulsars using these techniques have been reported, and the first direct measurements of the redshifts of quasars using an imaging detector with intrinsic energy resolution were published early this year.

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