From: Danny Lennon (djl@ing.iac.es)
Date: Thu Oct 24 2002 - 01:42:33 PDT
S-CAM ON THE WHT IN SEMESTER 2003B
Michael Perryman (ESA) advises that he will make the new 10x12-pixel
S-CAM available on the WHT in 2003B. Observers interested in
collaborative use of the instrument are invited to contact him before
the end of 2002.
His email is:
mperryma@rssd.esa.int
The S-CAM web page is on:
http://astro.estec.esa.nl/SA-general/Research/Stj/
S-CAM is based on the principle that a UV/optical/IR photon can break
Cooper pairs in a superconductor and release an electron packet of size
proportional to the photon energy. This makes possible high-speed
photon counting, in which the arrival time and the photon energy are
measured simultaneously.
The system provides high QE over a broad wavelength range, with zero
readout noise.
Summary of detector properties:
Detector area: 10 x 12 pixels, 0.8 arcsec/pixel
Wavelength coverage: 350-750 nm
Wavelength resolution: ~10 at 500 nm
Photon arrival time tagging to about 1 microsec
Count rate: (very approx) 200 counts/s at V=18 in V band
Bright magnitude limit: about V = 14 (brighter requiring ND filters)
Publications:
Optical STJ Observations of the Crab Pulsar,
Perryman et al, 1999, AA, 346, L30
S-Cam: an Imaging Spectrophotometer Based on Superconducting Tunnel Junctions,
Rando et al, 2000, Experimental Astronomy, 10, 499
High-Speed Energy-Resolved STJ Photometry of the Eclipsing Binary UZ For,
Perryman et al, 2001, MNRAS, 324, 899
Direct Determination of Quasar Redshifts,
de Bruijne et al., 2002, AA, 381, L57
Eclipse Mapping of HU Aqr from STJ Observations,
Bridge et al., 2002, MNRAS, in press
High-speed energy-resolved STJ photometry of the eclipsing dwarf nova IY UMa,
Steeghs et al., 2002, MNRAS, in press
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