ETC Request ID: STIS.sp.1006799
Exposure time (seconds) = 1,372.0000 at wavelength 1347.00 Å
gives: SNR = 10.1466 (per resolution element)
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 | 0.044 | 122.09 | 11.05 |
| Background | 0.001 | 2.88 | 1.70 |
| Sky | 4.233e-15 | 1.16e-11 | 3.41e-06 |
| Dark Current | 0.001 | 2.88 | 1.70 |
| Total in selected region | 0.046 | 124.97 | 12.03 |
| Brightest Pixel (single exposure) (at 1349.85 Å) | 0.017 | 22.70 | |
| Count rate entire detector | 2,577.995 | ||
| Buffer Time (sec) | 775.80 | ||
| 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 | 1,415.611 | 1,942,217.830 | |
| Background (sky+dark) | 157.308 | 215,826.56 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1343 |
| Grating: | [E140H] R ~ 114000 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Bruzual Synthetic Stellar Spectra B8 V |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.17 applied before normalization |
| Normalization: | Renormalized to vegamag = 10.36 in filter Johnson/V |
| 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 25.2
