ETC Request ID: STIS.sp.912653
Exposure time (seconds) = 2,000.0000 at wavelength 1222.00 Å
gives: SNR = 0.0000 (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 | 5.790e-237 | 2.32e-233 | 4.81e-117 |
| Background | 0.001 | 4.20 | 2.05 |
| Sky | 2.476e-13 | 9.90e-10 | 3.15e-05 |
| Dark Current | 0.001 | 4.20 | 2.05 |
| Total in selected region | 0.001 | 4.20 | 2.05 |
| Brightest Pixel (single exposure) (at 1215.00 Å) | 0.014 | 28.24 | |
| Count rate entire detector | 184.085 | ||
| Buffer Time (sec) | 10,864.52 | ||
| 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 | 0.597 | 1,193.367 | |
| Background (sky+dark) | 183.489 | 366,977.38 | |
| Encircled energy fraction | 0.76 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1222 |
| Grating: | [G140M] R ~ 10000 |
| Aperture: | 52X0.05 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Empty |
| Extinction E(B-V): | None |
| Normalization: | None |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1215.0 Å FWHM 0.5 Å Flux 4.5e-14 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.1.1
