Updated Measurements of ACS/SBC Dark Rates
Abstract
The results of dark rate monitoring programs for the ACS/SBC are presented here. The dark rate has a very low and stable value of 8.11 × 106 cts/pix/s when the instrument is 25°C. In a 1000s exposure, less than 1% of pixels will have 1 count. As the instrument warms up, the overall dark rate increases due to an elevated dark rate in the central region of the detector. Recommendations are made regarding observation planning and data analysis.
- Publication:
-
Instrument Science Report ACS 2017-4
- Pub Date:
- May 2017
- Bibcode:
- 2017acs..rept....4A
- Keywords:
-
- Hubble Space Telescope;
- HST;
- Space Telescope Science Institute;
- STScI;
- ACS