FLAMINGOS I Detector
The current array installed in FLAMINGOS-I is an Engineering Grade Rockwell PACE HgCdTe. The Science-Grade Hawaii II array is expected to arrive soon, but its use in 2002A is not guaranteed.
Because broad-band imaging observations are background limited in short exposure times , the readout mode corresponds to a single Fowler (double-correlated sampling) pair. For spectroscopic observations (with low background), 16 sample pairs are used to reduce the read noise by a factor of 4. Two bias voltage settings are used in these cases to provide deeper wells for the high background mode.
|Array||HgCdTe (Rockwell PACE)|
|Pixel format||2048x2048 18.5-micron pixels|
|Spectral Response||1 to 2.5 microns|
|Dark Current (imaging)||6.3 e-/s/pix|
|Dark Current (spectroscopy)||0.3 e-/s/pix|
|Read Noise (imaging)||49.5 e-/pix|
|Read Noise (spectroscopy)||15 e-/pix|
|Well depth (imaging)||225,000 e-|
|Well depth (spectroscopy)||171,000 e-|
Last update Aug 30, 2001; Michael Ledlow