ETC Request ID: STIS.sp.1165466
Requested Signal/Noise Ratio = 100.000 at wavelength 2500.00 Å (per resolution element)
gives: Time = 456.2876 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 | 10.970 | 10,010.75 | 100.05 |
| Background | 0.012 | 10.76 | 3.28 |
| Sky | 0.001 | 1.18 | 1.08 |
| Dark Current | 0.011 | 9.58 | 3.10 |
| Total in selected region | 10.982 | 10,021.50 | 100.11 |
| Brightest Pixel (single exposure) (at 2353.60 Å) | 5.505 | 2,511.85 | |
| Count rate entire detector | 11,895.245 | ||
| Buffer Time (sec) | 168.13 | ||
| 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 | 10,305.190 | 4,702,130.295 | |
| Background (sky+dark) | 1,590.055 | 725,522.19 | |
| Encircled energy fraction | 0.86 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [point source] | |
| Spectrum: | Standard HST Star Spectra HZ21 (DO2, 14.69) [1140.27, 10238.1 Å] |
| Extinction E(B-V): | None |
| Normalization: | None |
| 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
