ETC Request ID: STIS.sp.1370010
Exposure time (seconds) = 3,195.0000 at wavelength 1300.00 Å
gives: SNR = 10.2143 (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 | 0.024 | 152.68 | 12.36 |
| Background | 0.011 | 70.76 | 8.41 |
| Sky | 0.010 | 64.05 | 8.00 |
| Dark Current | 0.001 | 6.71 | 2.59 |
| Total in selected region | 0.035 | 223.45 | 14.95 |
| Brightest Pixel (single exposure) (at 1217.70 Å) | 0.016 | 50.55 | |
| Count rate entire detector | 285.208 | ||
| Buffer Time (sec) | 7,012.42 | ||
| 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 | 15.061 | 48,119.779 | |
| Background (sky+dark) | 270.147 | 863,121.07 | |
| 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: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Flux 7.5e-16 flam at 1300.0 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 27.2
