Dark current calibration summary 2022-11-10

Date (mean): 2022:314:01:46:01
T_ccd (mean): -9.65 C

CCD readouts summary

The table below provides the number of pixels which have the specified number of readouts. This quantifies how many pixels have been excluded either by star masking or because an entire quadrant readout is missing due to lost telemetry.

readoutsn_pixels
691
73
816521
9270
101031691

The table below summarizes each of the 1024x1024 CCD readouts that were used to create the calibration image. Note that each readout is stitched together from four quadrant readouts that are not synchronous in time. This is reflected in the quad dt column which shows the min and max delta time from the mean.

datequad dt (sec)t_ccdint_time(s)n_masked
2022:302:22:57:07-97 to +102-10.425.01470, 1415, 1157, 1076
2022:302:22:57:42-112 to +107-10.4210.01478, 1413, 1156, 1083
2022:305:18:12:07-97 to +102-10.385.0867, 947, 1078, 853
2022:305:18:12:43-112 to +107-10.3810.0868, 944, 1083, 848
2022:308:02:32:07-97 to +102-9.155.0795, 737, 811, 1059
2022:308:02:32:42-112 to +107-9.1510.0795, 735, 811, 1058
2022:316:01:06:08-98 to +102-9.475.0527, 577, 512, 397
2022:316:01:06:46-105 to +105-9.4710.0533, 581, 512, 396
2022:337:12:01:08-96 to +101-8.815.0777, 646, 501, 634
2022:337:12:01:43-112 to +107-8.8110.0778, 642, 502, 633

Plots (all scaled to -10 C)






Reference information

See the legacy dark current calibration pages for useful information.