ETC Request ID: STIS.sp.1165498
Requested Signal/Noise Ratio = 100.000 at wavelength 1500.00 Å (per resolution element)
gives: Time = 17,604.5050 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 | 0.285 | 10,036.83 | 100.18 |
| Background | 0.001 | 36.97 | 6.08 |
| Sky | 1.393e-10 | 4.90e-06 | 2.21e-03 |
| Dark Current | 0.001 | 36.97 | 6.08 |
| Total in selected region | 0.286 | 10,073.80 | 100.37 |
| Brightest Pixel (single exposure) (at 1595.10 Å) | 0.278 | 4,901.66 | |
| Count rate entire detector | 1,653.451 | ||
| Buffer Time (sec) | 1,209.59 | ||
| 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 | 366.027 | 6,443,724.590 | |
| Background (sky+dark) | 1,287.424 | 22,664,464.86 | |
| 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: | Castelli-Kurucz Models A3V 8750 4.0 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to abmag = 14.94 in filter Galex/FUV |
| 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 26.1
