ETC Request ID: STIS.sp.1297664
Requested Signal/Noise Ratio = 10.000 at wavelength 1657.00 Å (per resolution element)
gives: Time = 1,955.2833 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 | 0.027 | 103.95 | 10.20 |
| Background | 0.001 | 4.11 | 2.03 |
| Sky | 1.987e-10 | 7.77e-07 | 8.81e-04 |
| Dark Current | 0.001 | 4.11 | 2.03 |
| Total in selected region | 0.028 | 108.06 | 10.40 |
| Brightest Pixel (single exposure) (at 1296.90 Å) | 0.046 | 90.30 | |
| Count rate entire detector | 528.986 | ||
| Buffer Time (sec) | 3,780.82 | ||
| 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 | 89.165 | 174,343.311 | |
| Background (sky+dark) | 439.821 | 859,974.36 | |
| Encircled energy fraction | 0.85 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.5 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 15.0 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1657.0 Å FWHM 5.0 Å Flux 2e-15 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 26.2
