ETC Request ID: STIS.sp.996659
Exposure time (seconds) = 2,950.0000 at wavelength 1215.70 Å
gives: SNR = 0.1366 (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 2 pixels high) | (1 pix x pix) | (2.0 pix resel x pix) | |
| Source | 6.210e-05 | 0.37 | 0.61 |
| Background | 0.001 | 6.74 | 2.60 |
| Sky | 8.421e-04 | 4.97 | 2.23 |
| Dark Current | 3.000e-04 | 1.77 | 1.33 |
| Total in selected region | 0.001 | 7.10 | 2.68 |
| Brightest Pixel (single exposure) (at 1215.70 Å) | 6.021e-04 | 1.78 | |
| Count rate entire detector | 162.519 | ||
| Buffer Time (sec) | 12,306.25 | ||
| 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 | 0.649 | 1,913.642 | |
| Background (sky+dark) | 161.338 | 475,948.26 | |
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1234 |
| Grating: | [E140H] R ~ 114000 |
| Aperture: | 52X0.05 |
| Glow region: | low |
| Target: [extended source] | |
| Source diameter (arcsec): | 8.0 |
| Spectrum: | User uploaded spectrum: sat-dec-1996DDD.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 25.1.1
