ETC Request ID: STIS.sp.824320
Exposure time (seconds) = 900.0000 at wavelength 1400.00 Å
gives: SNR = 26.2550 (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 | 0.384 | 691.21 | 26.29 |
| Background | 0.001 | 1.89 | 1.37 |
| Sky | 2.418e-12 | 4.35e-09 | 6.60e-05 |
| Dark Current | 0.001 | 1.89 | 1.37 |
| Total in selected region | 0.385 | 693.10 | 26.33 |
| Brightest Pixel (single exposure) (at 1300.50 Å) | 0.157 | 141.60 | |
| Count rate entire detector | 475.855 | ||
| Buffer Time (sec) | 4,202.96 | ||
| 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 | 317.650 | 285,885.405 | |
| Background (sky+dark) | 158.205 | 142,384.13 | |
| Encircled energy fraction | 0.82 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 0.2X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to abmag = 16.0 in filter Galex/FUV |
| 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
