ETC Request ID: STIS.sp.827324
Exposure time (seconds) = 900.0000 at wavelength 1550.00 Å
gives: SNR = 10.3144 (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 | 0.060 | 108.25 | 10.40 |
| Background | 0.001 | 1.89 | 1.37 |
| Sky | 4.969e-11 | 8.94e-08 | 2.99e-04 |
| Dark Current | 0.001 | 1.89 | 1.37 |
| Total in selected region | 0.061 | 110.14 | 10.49 |
| Brightest Pixel (single exposure) (at 1269.30 Å) | 0.085 | 76.10 | |
| Count rate entire detector | 421.058 | ||
| Buffer Time (sec) | 4,749.94 | ||
| 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 | 149.064 | 134,157.881 | |
| Background (sky+dark) | 271.994 | 244,794.49 | |
| Encircled energy fraction | 0.84 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Power Law with index -2.3 |
| Extinction E(B-V): | None |
| Normalization: | Flux 5.6e-15 flam at 1528.0 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
