ETC Request ID: STIS.sp.932114
Exposure time (seconds) = 2,400.0000 at wavelength 2200.00 Å
gives: SNR = 4.3598 (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 2 pixels high) | (1 pix x pix) | (2.0 pix resel x pix) | |
| Source | 0.006 | 28.59 | 5.35 |
| Background | 0.003 | 14.41 | 3.80 |
| Sky | 1.450e-06 | 6.96e-03 | 0.08 |
| Dark Current | 0.003 | 14.40 | 3.79 |
| Total in selected region | 0.009 | 42.99 | 6.56 |
| Brightest Pixel (single exposure) (at 2928.00 Å) | 0.050 | 120.84 | |
| Count rate entire detector | 1,977.918 | ||
| Buffer Time (sec) | 1,011.16 | ||
| 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 | 387.877 | 930,903.803 | |
| Background (sky+dark) | 1,590.041 | 3,816,098.23 | |
| Instrument name: | STIS |
| Mode: | spectroscopic |
| Detector: | NUVMAMA |
| Central Wavelength: | |
| Grating: | [G230L] R ~ 500 |
| Aperture: | 52X2 |
| Target: [extended source] | |
| Source diameter (arcsec): | 0.978 |
| Spectrum: | User uploaded spectrum: ganysigs2.dat |
| 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
