ETC Request ID: STIS.ta.622498
Exposure time (seconds) = 3.0000
gives: SNR = 227.2876
gives: Time to Saturation (for a single exposure) = 16.38 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 17,410.680 | 52,232.04 | 228.54 |
| Background | 0.904 | 2.71 | 1.65 |
| Sky | 0.751 | 2.25 | 1.50 |
| Dark Current | 0.153 | 0.46 | 0.68 |
| Read Out | 24.00 | ||
| Total in selected region | 17,411.584 | 52,234.75 | 229.81 |
| Brightest Pixel (single exposure) | 7,326.886 | 21,980.66 | |
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| Global Count Rates | |||
| Source only | 32,687.151 | 98,061.453 | |
| Background (sky+dark) | 105,324.796 | 315,974.39 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 33.378 | 100.135 | |
| Dark Current (arcsec-2) | 6.800 | 20.400 | |
| Extraction region | |||
| box of 3 x 3 pixels | |||
| Effective Sky Area (pixels) | 9.00 | ||
| Fraction of flux | 0.50 | ||
| Fraction of flux in brightest pixel | 0.21 | ||
| Effective Wavelength | 6599.70 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ |
| Aperture: | 50CCD |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 15.0 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 22.2
