ETC Request ID: STIS.sp.1013402
Exposure time (seconds) = 2,200.0000 at wavelength 1300.00 Å
gives: SNR = 12.2525 (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 | 0.043 | 188.96 | 13.75 |
| Background | 0.011 | 48.89 | 6.99 |
| Sky | 0.010 | 44.27 | 6.65 |
| Dark Current | 0.001 | 4.62 | 2.15 |
| Total in selected region | 0.054 | 237.85 | 15.42 |
| Brightest Pixel (single exposure) (at 1217.70 Å) | 0.020 | 44.30 | |
| Count rate entire detector | 295.518 | ||
| Buffer Time (sec) | 6,767.78 | ||
| 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 | 25.080 | 55,174.955 | |
| Background (sky+dark) | 270.438 | 594,964.32 | |
| Encircled energy fraction | 0.81 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | Black body at 40000.0K |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.08 applied before normalization |
| Normalization: | Flux 5e-16 flam at 2000.0 Å |
| Redshift: | z=0.0206 |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
Table of Source and Noise Counts per Pixel
These results were computed using: ETC version 25.2
