ETC Request ID: STIS.sp.1012858
Exposure time (seconds) = 2,303.0000 at wavelength 2803.00 Å
gives: SNR = 25.0903 (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 | 0.146 | 674.66 | 25.97 |
| Background | 0.011 | 48.38 | 6.96 |
| Sky | 3.895e-06 | 0.02 | 0.13 |
| Dark Current | 0.011 | 48.36 | 6.95 |
| Total in selected region | 0.157 | 723.05 | 26.89 |
| Brightest Pixel (single exposure) (at 2803.20 Å) | 0.061 | 139.75 | |
| Count rate entire detector | 1,586.498 | ||
| Buffer Time (sec) | 1,260.64 | ||
| 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 | 9.278 | 21,367.865 | |
| Background (sky+dark) | 1,577.220 | 3,632,337.38 | |
| Encircled energy fraction | 0.87 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.5 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: cartoon.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
