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The bHROS detector currently consists of a single 2048X4608 E3V (formerly EEV) CCD chip. The table below gives a summary of the current detector/controller characteristics
|Pixel format||2048x4068 pixels|
|Pixel size||13.5 microns square|
|Pixel sampling||3 pixel FWHM sampling|
|Readout time||123 seconds (1x1 binning). See observing overheads page for more information.|
|Dark current*||6 e- per hour|
*This includes both traditional CCD dark current and excess background within the
See the scattered light page for more information.
|Readout Rate||Gain Level||Gain (e-/DN)||Read noise (e- rms)|
Data from Gemini facility instruments, including bHROS, are stored as Multi-Extension FITS (MEF) files. More information about the data format and GMOS data examples are available. The image section has an accompanying overscan region 32 pixels wide. When pixel binning is used, the resulting datafile still contains regions that are 32 samples wide.
Last update August 30, 2006; Steven Margheim