ETC Request ID: STIS.sp.1007072
Requested Signal/Noise Ratio = 30.000 at wavelength 1550.00 Å (per resolution element)
gives: Time = 40.0920 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 | 11.225 | 900.08 | 30.00 |
| Background | 0.001 | 0.08 | 0.29 |
| Sky | 4.957e-10 | 3.97e-08 | 1.99e-04 |
| Dark Current | 0.001 | 0.08 | 0.29 |
| Total in selected region | 11.226 | 900.17 | 30.00 |
| Brightest Pixel (single exposure) (at 1550.10 Å) | 3.341 | 133.96 | |
| Count rate entire detector | 1,319.469 | ||
| Buffer Time (sec) | 1,515.76 | ||
| 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 | 30.663 | 1,229.348 | |
| Background (sky+dark) | 1,288.806 | 51,670.86 | |
| Encircled energy fraction | 0.84 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Empty |
| Extinction E(B-V): | None |
| Normalization: | None |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1550.0 Å FWHM 0.1 Å Flux 1e-12 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
