ETC Request ID: STIS.sp.1302005
Exposure time (seconds) = 2,900.0000 at wavelength 2795.50 Å
gives: SNR = 39.0450 (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 | 0.283 | 1,641.24 | 40.51 |
| Background | 0.014 | 81.20 | 9.01 |
| Sky | 1.049e-09 | 6.08e-06 | 2.47e-03 |
| Dark Current | 0.014 | 81.20 | 9.01 |
| Total in selected region | 0.297 | 1,722.44 | 42.03 |
| Brightest Pixel (single exposure) (at 2795.50 Å) | 0.108 | 313.31 | |
| Count rate entire detector | 2,166.340 | ||
| Buffer Time (sec) | 923.22 | ||
| 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 | 59.185 | 171,637.120 | |
| Background (sky+dark) | 2,097.152 | 6,081,740.96 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 2713 |
| Grating: | [E230H] R ~ 114000 |
| Aperture: | 0.2X0.09 |
| Target: [point source] | |
| Spectrum: | Bruzual Synthetic Stellar Spectra M1 V |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 11.44 in filter Johnson/U |
| Redshift: | None |
| Emission Lines: | |
| Line at | Center 2795.5 Å FWHM 0.3 Å Flux 4.1e-13 Fλ |
| Line at | Center 2802.7 Å FWHM 0.3 Å Flux 2.9e-13 Fλ |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 26.2
