lin_ccd1_medT.gif (filename of plot; plot made with lin_ccd.pro)
CCD linearity sequence #1 MSI (made with ccd_lin.pro). Average 16 image files used.
lin_ccd1_medT.gif (filename of plot; plot made with lin_ccd.pro)
CCD linearity sequence #1 MSI (made with ccd_lin.pro). Average 16 image files used.
Filename Mean Std ND ----------------------------------------------- 20580129.FIT* 0.00000 0.00000 0 20580269.FIT 1247.24 41.9437 0 20580309.FIT 1245.96 42.2717 0.1 20580349.FIT 20.7882 ? 1.05373 0.3 20580389.FIT 425.600 14.5842 0.5 20580429.FIT 138.260 4.54301 1.0 20580469.FIT 47.3467 1.80006 1.5 20580509.FIT 20.8017 1.05499 2.0 20580549.FIT 12.6487 0.934690 2.5First image* is a dark subtracted from the rest of the images. All frames were acquired at an exposure time of 917 msec (ND was varying). The file with the question mark by the average is suspect and thus not plotted (possibly filter was not changed?). The nearly identical average DN for the ND=0 and ND=0.1 is suspect and I am checking into this (20580269.FIT vs. 20580309.FIT). The statistics were collected over the subarea of the image relatively free from the oil slicks and scratch (see above).
CCD linearity sequence #2 MSI. Average 16 image files.
Filename Mean Std ND ----------------------------------------------- 20580129.FIT* 0.00000 0.00000 0 20580599.FIT 2847.33 76.2996 0 20580639.FIT 2340.75 63.9480 0.1 20580679.FIT 1477.55 40.0402 0.3 20580719.FIT 306.453 ? 8.60241 0.5 20580759.FIT 306.300 ? 8.66062 1.0 20580799.FIT 79.4612 2.36883 1.5 20580839.FIT 25.1456 1.18597 2.0 20580879.FIT 6.27657 0.927400 2.5It would appear that the ND filter was NOT changed from 719 to 759?