ETC Request ID: STIS.sp.828011
Exposure time (seconds) = 2,300.0000 at wavelength 1250.00 Å
gives: SNR = 13.3494 (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 pix) | (2.0 pix resel x pix) | |
| Source | 0.051 | 236.11 | 15.37 |
| Background | 0.001 | 4.83 | 2.20 |
| Sky | 2.462e-14 | 1.13e-10 | 1.06e-05 |
| Dark Current | 0.001 | 4.83 | 2.20 |
| Total in selected region | 0.052 | 240.94 | 17.69 |
| Brightest Pixel (single exposure) (at 1320.44 Å) | 0.028 | 64.47 | |
| Count rate entire detector | 2,552.723 | ||
| Buffer Time (sec) | 783.48 | ||
| 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 | 1,443.009 | 3,318,921.539 | |
| Background (sky+dark) | 157.327 | 361,851.11 | |
| Encircled energy fraction | 0.91 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | 1425 |
| Grating: | [E140M] R ~ 45800 |
| Aperture: | 0.2X0.06 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Bruzual Synthetic Stellar Spectra B1 V |
| Extinction E(B-V): | None |
| Normalization: | Flux 7.5e-13 flam at 1260.0 Å |
| 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 24.2
