2024-11-15 |
hst_1193.pmap |
operational |
Delivery of new STIS CCD bias and dark reference files for CCD data taken between October 2 and October 31, 2024. The files were generated from data taken in the same time frame under STIS calibration programs 17378 and 17376. |
2024-10-29 |
hst_1192.pmap |
archived |
The ACS WFC bias, dark, CTE dark, and sink files were generated following the ACS WFC anneal on October 26, 2024, and should be used to calibrate ACS WFC observations taken between September 23, 2024 and October 26, 2024. |
2024-10-21 |
hst_1191.pmap |
archived |
These time-dependent WFC3 IR superdark reference files will affect all IR data taken from HST Cycle 26, beginning on November 5, 2018, to the present. They incorporate several more years of individual IR dark frames than previous references, and make use of updated BPIXTAB files to more accurately represent the dark current in time-dependent hot pixel populations for data taken since the last delivery of IR superdarks. A description of the process used to create these files is recorded in the history sections of their headers, as is a list of the individual dark images used to create each file. Additional information on the superdark creation process can be found in WFC3 ISRs by Sunnquist et al., 2019, and Pidgeon and Khandrika, 2024. |
2024-10-17 |
hst_1190.pmap |
archived |
New WFC3 UVIS superdarks and a bad pixel table are being provided for all UVIS data taken from September 10, 2024 to October 11, 2024. The automated pipeline should now use these reference files to perform dark subtraction on any UVIS datasets obtained between the dates above, as they represent the most accurate picture of dark current and hot pixels for this time period and also represent the most accurate measure of pixel stability. |