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OGLE project CCD cameras at LCO

2009-09-26 23:44

OGLE project CCD cameras at Las Campanas Observatory

Single chip camera (OGLE-II, 1997-2001)
- SITe 2048×2049 thin chip
- 90% QE over wide range from B to I, also some sensitivity in U
- 0.4 arcsec/pixel scale
- 5 e^– readout noise at 3.8 e^–/ADU (16-bit ADC: 65535 levels)
- modular control system developed at Warsaw University Observatory – easily expandable to multi-chip mosaic, next generation cameras
„Second generation” mosaic camera (OGLE-III, 2001-2009)
- eight thin SITe 2048×4096 CCD chips (total of 8192×8192 pixels)
- 0.26 arcsec/pixel scale, 35’×35′ total field of view
- 6-9 e^– readout noise (depending on chip) at 1.3 e^–/ADU gain
- 98 seconds readout time
„Third generation” mosaic camera (OGLE-IV, 2009-…; still in commissioning phase)
- 32 thin E2V44-82 2048×4096 CCD chips
- 0.26 arcsec/pixel scale, 1.4 square degrees total field of view
- 4.5-6.5 e^– readout noise (depending on chip) at 1.0 e^–/ADU gain
- 20 seconds readout time