ETC Request ID: STIS.sp.1392950
Requested Signal/Noise Ratio = 10.000 at wavelength 1216.00 Å (per resolution element)
gives: Time = 84.5167 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 | 0.593 | 100.18 | 10.01 |
| Background | 0.001 | 0.18 | 0.42 |
| Sky | 2.731e-08 | 4.62e-06 | 2.15e-03 |
| Dark Current | 0.001 | 0.18 | 0.42 |
| Total in selected region | 0.594 | 100.35 | 10.02 |
| Brightest Pixel (single exposure) (at 1216.00 Å) | 0.196 | 16.58 | |
| Count rate entire detector | 234.917 | ||
| Buffer Time (sec) | 8,513.65 | ||
| 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 | 1.768 | 149.392 | |
| Background (sky+dark) | 233.149 | 19,705.01 | |
| Encircled energy fraction | 0.76 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1222 |
| Grating: | [G140M] R ~ 10000 |
| 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 1216.0 Å FWHM 0.1 Å Flux 6.4e-14 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 27.2
