ETC Request ID: STIS.sp.1008229
Exposure time (seconds) = 1,070.0000 at wavelength 1450.00 Å
gives: SNR = 7.8521 (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 | 0.030 | 63.83 | 7.99 |
| Background | 0.001 | 2.25 | 1.50 |
| Sky | 2.652e-12 | 5.68e-09 | 7.53e-05 |
| Dark Current | 0.001 | 2.25 | 1.50 |
| Total in selected region | 0.031 | 66.07 | 8.13 |
| Brightest Pixel (single exposure) (at 1215.30 Å) | 0.353 | 377.81 | |
| Count rate entire detector | 372.183 | ||
| Buffer Time (sec) | 5,373.70 | ||
| 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 | 101.745 | 108,866.705 | |
| Background (sky+dark) | 270.438 | 289,369.01 | |
| Encircled energy fraction | 0.83 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | FUVMAMA |
| Central Wavelength: | |
| Grating: | [G140L] R ~ 1000 |
| Aperture: | 52X0.2 |
| Glow region: | low |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: m81fos.txt |
| Extinction E(B-V): | None |
| 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 25.2
