ETC Request ID: STIS.sp.1008895
Exposure time (seconds) = 2,700.0000 at wavelength 1216.00 Å
gives: SNR = 9.0890 (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 | 0.023 | 122.38 | 11.06 |
| Background | 0.001 | 5.67 | 2.38 |
| Sky | 8.103e-14 | 4.38e-10 | 2.09e-05 |
| Dark Current | 0.001 | 5.67 | 2.38 |
| Total in selected region | 0.024 | 128.05 | 13.46 |
| Brightest Pixel (single exposure) (at 1215.72 Å) | 0.008 | 22.71 | |
| Count rate entire detector | 167.692 | ||
| Buffer Time (sec) | 11,926.62 | ||
| 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 | 6.189 | 16,710.148 | |
| Background (sky+dark) | 157.419 | 425,029.97 | |
| 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 M2 V |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 7.34 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 1216.0 Å FWHM 0.9 Å Flux 3.7e-13 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
