ETC Request ID: STIS.sp.1006725
Exposure time (seconds) = 1,800.0000 at wavelength 1500.00 Å
gives: SNR = 17.9553 (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 | 0.102 | 366.44 | 19.14 |
| Background | 0.001 | 3.78 | 1.94 |
| Sky | 3.551e-14 | 1.28e-10 | 1.13e-05 |
| Dark Current | 0.001 | 3.78 | 1.94 |
| Total in selected region | 0.103 | 370.22 | 20.41 |
| Brightest Pixel (single exposure) (at 1320.92 Å) | 0.050 | 89.25 | |
| Count rate entire detector | 5,371.890 | ||
| Buffer Time (sec) | 372.31 | ||
| 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 | 3,141.246 | 5,654,242.655 | |
| Background (sky+dark) | 157.419 | 283,353.31 | |
| Encircled energy fraction | 0.95 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1425 |
| Grating: | [E140M] R ~ 45800 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Bruzual Synthetic Stellar Spectra B2 V |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.41 applied before normalization |
| Normalization: | Renormalized to vegamag = 10.58 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
