ETC Request ID: STIS.sp.1046409
Requested Signal/Noise Ratio = 10.000 at wavelength 1393.00 Å (per resolution element)
gives: Time = 1,336.5864 seconds
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 | 0.038 | 102.73 | 10.14 |
| Background | 0.001 | 2.81 | 1.68 |
| Sky | 2.339e-12 | 6.25e-09 | 7.91e-05 |
| Dark Current | 0.001 | 2.81 | 1.68 |
| Total in selected region | 0.039 | 105.54 | 10.27 |
| Brightest Pixel (single exposure) (at 1548.90 Å) | 0.042 | 55.71 | |
| Count rate entire detector | 270.926 | ||
| Buffer Time (sec) | 7,382.09 | ||
| 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 | 0.488 | 651.928 | |
| Background (sky+dark) | 270.438 | 361,464.19 | |
| Encircled energy fraction | 0.82 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Empty |
| Extinction E(B-V): | None |
| Normalization: | None |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1393.0 Å FWHM 0.08 Å Flux 2.1e-15 Fλ |
| Line at | Center 1549.0 Å FWHM 0.08 Å Flux 1.67e-14 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
