ETC Request ID: STIS.sp.1036888
Exposure time (seconds) = 1,190.0000 at wavelength 1978.00 Å
gives: SNR = 9.4992 (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 | 0.050 | 118.40 | 10.88 |
| Background | 0.011 | 24.99 | 5.00 |
| Sky | 4.076e-13 | 9.70e-10 | 3.11e-05 |
| Dark Current | 0.011 | 24.99 | 5.00 |
| Total in selected region | 0.060 | 143.39 | 12.46 |
| Brightest Pixel (single exposure) (at 2317.97 Å) | 0.043 | 51.10 | |
| Count rate entire detector | 2,767.796 | ||
| Buffer Time (sec) | 722.60 | ||
| 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 | 940.885 | 1,119,653.327 | |
| Background (sky+dark) | 1,572.864 | 1,871,708.16 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 1978 |
| Grating: | [E230M] R ~ 30000 |
| Aperture: | 0.2X0.05ND |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: modelfluxsm-td1.dat |
| 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 25.2
