ETC Request ID: STIS.sp.1008265
Exposure time (seconds) = 575.0000 at wavelength 2200.00 Å
gives: SNR = 61.9840 (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 | 3.351 | 3,854.05 | 62.08 |
| Background | 0.011 | 12.08 | 3.48 |
| Sky | 1.043e-06 | 1.20e-03 | 0.03 |
| Dark Current | 0.011 | 12.08 | 3.47 |
| Total in selected region | 3.362 | 3,866.13 | 62.18 |
| Brightest Pixel (single exposure) (at 2891.20 Å) | 3.492 | 2,008.14 | |
| Count rate entire detector | 5,494.990 | ||
| Buffer Time (sec) | 363.97 | ||
| 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 | 3,920.225 | 2,254,129.424 | |
| Background (sky+dark) | 1,574.765 | 905,489.74 | |
| 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: mrk509fos.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
