ETC Request ID: STIS.sp.1302182
Exposure time (seconds) = 2,900.0000 at wavelength 1216.00 Å
gives: SNR = 8.7215 (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 | 0.020 | 113.25 | 10.64 |
| Background | 0.001 | 6.09 | 2.47 |
| Sky | 8.094e-14 | 4.69e-10 | 2.17e-05 |
| Dark Current | 0.001 | 6.09 | 2.47 |
| Total in selected region | 0.021 | 119.34 | 12.99 |
| Brightest Pixel (single exposure) (at 1215.70 Å) | 0.008 | 21.94 | |
| Count rate entire detector | 160.049 | ||
| Buffer Time (sec) | 12,496.20 | ||
| 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 | 1.585 | 4,595.226 | |
| Background (sky+dark) | 157.418 | 456,513.20 | |
| Encircled energy fraction | 0.88 | ||
| 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 M6 V |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 17.75 in filter Johnson/U |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1216.0 Å FWHM 0.9 Å Flux 3.2e-13 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 26.2
