ETC Request ID: STIS.sp.919947
Requested Signal/Noise Ratio = 21.000 at wavelength 1800.00 Å (per resolution element)
gives: Time = 48,590.5276 seconds
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 | 0.010 | 963.34 | 31.04 |
| Background | 0.011 | 1,020.40 | 31.94 |
| Sky | 9.526e-12 | 9.26e-07 | 9.62e-04 |
| Dark Current | 0.011 | 1,020.40 | 31.94 |
| Total in selected region | 0.020 | 1,983.74 | 45.87 |
| Brightest Pixel (single exposure) (at 1892.41 Å) | 0.008 | 385.03 | |
| Count rate entire detector | 1,919.546 | ||
| Buffer Time (sec) | 1,041.91 | ||
| 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 | 221.099 | 10,743,336.138 | |
| Background (sky+dark) | 1,572.864 | 76,426,291.63 | |
| Encircled energy fraction | 0.92 | ||
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | 1763 |
| Grating: | [E230H] R ~ 114000 |
| Aperture: | 0.2X0.09 |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models F2V 7000 4.0 |
| Extinction E(B-V): | None |
| Normalization: | Flux 3.1e-13 flam at 1800.0 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
