... Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for Cycle 17 > Chapter 8: Detector Readout Modes > 8.4 Accumulate Mode . ... Its main difference relative to a MULTIACCUM exposure with NSAMP =2 (or two readouts selected) is that the first array read gets subtracted from the second array read by the on-board computer, and only the difference image is sent to the ground. ... Multiple Initial and Final Sample Readout . ... Figure 8.3: ACCUM Mode with Four Initial and Final...

Main Page Data Structures File List Data Fields Globals . ... int . read_oi_array (fitsfile *fptr, char *arrname, oi_array *array, int *status) . Read OI_ARRAY fits binary table. More... int . read_oi_target (fitsfile *fptr, oi_target *targets, int *status) . ... read_oi_wavelength (fitsfile *fptr, char *insname, oi_wavelength *wave, int *status) . ... read_next_oi_vis (fitsfile *fptr, oi_vis *vis, int *status) . ... read_next_oi_vis2 (fitsfile *fptr, oi_vis2 *vis2, int *status) . ...

Next: Reading and Writing Continuum Up: UV Data Sets Previous: Open, Close and Rewind . The routines uvread and uvwrite are routines used to read and write the correlation data (and the associated flagging information). Here preamble is an array of four double precision elements, data is an array of n complex elements, whereas flags is an array of n logical values. ... Using uvflgwr when reading a visibility file, is the method used to develop flagging tasks. ...

Fasti is an innovative design for infrared detector control. The present-day commercial electronics for reading bi-dimensional near-infrared array detectors often lack useful feature as quick sub-array fast acquisition, or is based on old components, or cannot cope with newer devices, as the 2048x2048, multi--output Rockwell Hawaii-2. ... Named Fasti , it is meant to be a "light" electronic system, which is modular, flexible, extendible, and avoids obsolescence as much as possible. ...

TEST RESULTS WITH 2KX2K MCT ARRAYS Finger, G, Dorn, R.J., Mehrgan, H., Meyer, M., Moorwood A.F.M. and Stegmeier, J. European Southern Observatory Abstract: The performance of both an LPE 2Kx2K engineering grade and a science grade array have been evaluated. Both arrays have a cut-off wavelength of c=2.6 µm. At an operating temperature of 60 K, the dark current of the science grade array is 0.004 e/s. The peak quantum efficiency of the science grade array is 84.4%. ...