ETC Request ID: STIS.sp.1046469
Requested Signal/Noise Ratio = 5.000 at wavelength 1393.00 Å (per resolution element)
gives: Time = 6,295.4311 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 | 0.003 | 34.56 | 5.88 |
| Background | 0.001 | 13.22 | 3.64 |
| Sky | 2.339e-12 | 2.94e-08 | 1.72e-04 |
| Dark Current | 0.001 | 13.22 | 3.64 |
| Total in selected region | 0.004 | 47.78 | 6.91 |
| Brightest Pixel (single exposure) (at 1217.10 Å) | 0.011 | 68.76 | |
| Count rate entire detector | 270.459 | ||
| Buffer Time (sec) | 7,394.85 | ||
| 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 | 0.020 | 127.077 | |
| Background (sky+dark) | 270.438 | 1,702,525.88 | |
| 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 1.5e-16 Fλ |
| Line at | Center 1549.0 Å FWHM 0.08 Å Flux 5.5e-16 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
