ETC Request ID: STIS.sp.904092
Exposure time (seconds) = 1,607.0000 at wavelength 2300.00 Å
gives: SNR = 18.0452 (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 | 0.111 | 356.46 | 18.88 |
| Background | 0.011 | 33.75 | 5.81 |
| Sky | 6.040e-07 | 1.94e-03 | 0.04 |
| Dark Current | 0.011 | 33.75 | 5.81 |
| Total in selected region | 0.121 | 390.21 | 19.75 |
| Brightest Pixel (single exposure) (at 2800.00 Å) | 0.093 | 149.66 | |
| Count rate entire detector | 1,708.975 | ||
| Buffer Time (sec) | 1,170.29 | ||
| 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 | 134.391 | 215,966.777 | |
| Background (sky+dark) | 1,574.584 | 2,530,355.89 | |
| Encircled energy fraction | 0.85 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X0.2 |
| Target: [point source] | |
| Spectrum: | User uploaded spectrum: PS16dtm_latest.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 25.1
