ETC Request ID: STIS.ta.826540
Exposure time (seconds) = 0.1000
gives: SNR = 147.6660
gives: Time to Saturation (for a single exposure) = 0.99 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 224,372.710 | 22,437.27 | 149.79 |
| Background | 0.921 | 0.09 | 0.30 |
| Sky | 0.750 | 0.07 | 0.27 |
| Dark Current | 0.171 | 0.02 | 0.13 |
| Read Out | 25.50 | ||
| Total in selected region | 224,373.631 | 22,437.36 | 151.95 |
| Brightest Pixel (single exposure) | 120,744.421 | 12,074.44 | |
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| Global Count Rates | |||
| Source only | 428,295.349 | 42,829.535 | |
| Background (sky+dark) | 107,295.846 | 10,729.58 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 33.330 | 3.333 | |
| Dark Current (arcsec-2) | 7.600 | 0.760 | |
| 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 | 0.27 | ||
| Effective Wavelength | 4328.27 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: | Standard HST Star Spectra G191B2B (DA0, 11.781) [100.0, 400104.0 Å] |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 12.42 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 24.2
