ETC Request ID: STIS.sp.825370
Exposure time (seconds) = 3,000.0000 at wavelength 1380.00 Å
gives: SNR = 48.5941 (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 pix) | (2.0 pix resel x pix) | |
| Source | 0.450 | 2,699.37 | 51.96 |
| Background | 0.001 | 6.30 | 2.51 |
| Sky | 6.102e-15 | 3.66e-11 | 6.05e-06 |
| Dark Current | 0.001 | 6.30 | 2.51 |
| Total in selected region | 0.451 | 2,705.67 | 55.55 |
| Brightest Pixel (single exposure) (at 1319.70 Å) | 0.206 | 616.70 | |
| Count rate entire detector | 19,513.185 | ||
| Buffer Time (sec) | 102.49 | ||
| 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 | 12,173.521 | 36,520,564.062 | |
| Background (sky+dark) | 157.286 | 471,859.20 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1416 |
| Grating: | [E140H] R ~ 114000 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: DAflux.txt |
| Extinction E(B-V): | None |
| Normalization: | Flux 7e-12 flam at 1380.0 Å |
| 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 24.2
