ETC Request ID: STIS.sp.1168852
Exposure time (seconds) = 3,070.0000 at wavelength 2800.00 Å
gives: SNR = 71.9990 (per resolution element)
Table of Source and Noise Counts per Pixel
| Detailed Information | Count rate | Total counts | Associated noise |
| (counts/s) | (counts) | (counts) | |
| Counts (box 7 pixels high) | (1 pix x 7 pix) | (2 pix resel x 7 pix) | |
| Source | 0.855 | 5,247.69 | 72.44 |
| Background | 0.011 | 64.61 | 8.04 |
| Sky | 2.275e-05 | 0.14 | 0.37 |
| Dark Current | 0.011 | 64.47 | 8.03 |
| Total in selected region | 0.865 | 5,312.30 | 72.89 |
| Brightest Pixel (single exposure) (at 2803.20 Å) | 2.532 | 7,774.05 | |
| Count rate entire detector | 1,876.228 | ||
| Buffer Time (sec) | 1,065.97 | ||
| For APT purposes, the recommended buffer time should be 4/5 of the buffer time calculated above. Please refer to the STIS Instrument Handbook for more details. | |||
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| Global Count Rates | |||
| Source only | 286.173 | 878,552.104 | |
| Background (sky+dark) | 1,590.055 | 4,881,467.82 | |
| Encircled energy fraction | 0.87 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: GJ832_HLSP_for_ETC.txt |
| Extinction E(B-V): | None |
| Normalization: | None |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 26.1
