ETC Request ID: STIS.sp.994995
Exposure time (seconds) = 2,400.0000 at wavelength 2200.00 Å
gives: SNR = 15.4483 (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 | 0.059 | 281.39 | 16.77 |
| Background | 0.011 | 50.40 | 7.10 |
| Sky | 5.567e-07 | 2.67e-03 | 0.05 |
| Dark Current | 0.011 | 50.40 | 7.10 |
| Total in selected region | 0.069 | 331.80 | 18.22 |
| Brightest Pixel (single exposure) (at 2801.60 Å) | 0.141 | 338.53 | |
| Count rate entire detector | 1,665.208 | ||
| Buffer Time (sec) | 1,201.05 | ||
| 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 | 90.624 | 217,498.298 | |
| Background (sky+dark) | 1,574.584 | 3,779,000.70 | |
| 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: psr_j1023.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 25.1.1
