ETC Request ID: STIS.sp.916561
Exposure time (seconds) = 4,850.0000 at wavelength 2260.00 Å
gives: SNR = 37.3957 (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 | 0.163 | 1,581.71 | 39.77 |
| Background | 0.011 | 101.85 | 10.09 |
| Sky | 4.578e-10 | 4.44e-06 | 2.11e-03 |
| Dark Current | 0.011 | 101.85 | 10.09 |
| Total in selected region | 0.174 | 1,683.56 | 42.30 |
| Brightest Pixel (single exposure) (at 2375.25 Å) | 0.087 | 423.07 | |
| Count rate entire detector | 8,721.194 | ||
| Buffer Time (sec) | 229.33 | ||
| 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 | 5,263.863 | 25,529,734.928 | |
| Background (sky+dark) | 1,572.864 | 7,628,390.46 | |
| Encircled energy fraction | 0.93 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 2263 |
| Grating: | [E230H] R ~ 114000 |
| Aperture: | 0.2X0.09 |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Flux 1.3e-12 flam at 2260.0 Å |
| 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
