ETC Request ID: STIS.sp.508430
Exposure time (seconds) = 4,680.0000 at wavelength 1500.00 Å
gives: SNR = 2.3881 (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 | 0.001 | 10.86 | 3.30 |
| Background | 0.001 | 9.83 | 3.13 |
| Sky | 4.262e-12 | 3.99e-08 | 2.00e-04 |
| Dark Current | 0.001 | 9.83 | 3.13 |
| Total in selected region | 0.002 | 20.69 | 4.55 |
| Brightest Pixel (single exposure) (at 1214.70 Å) | 0.028 | 129.68 | |
| Count rate entire detector | 240.619 | ||
| Buffer Time (sec) | |||
| 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 | 6.629 | 31,021.479 | |
| Background (sky+dark) | 233.990 | 1,095,073.51 | |
| Encircled energy fraction | 0.84 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: 05ip.txt |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.11 applied before normalization |
| Normalization: | None |
| 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 21.2
