ETC Request ID: STIS.ta.820960
Exposure time (seconds) = 5.0000
gives: SNR = 324.8738
gives: Time to Saturation (for a single exposure) = 9.98 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 21,238.022 | 106,190.11 | 325.87 |
| Background | 0.172 | 0.86 | 0.93 |
| Sky | 0.001 | 5.27e-03 | 0.07 |
| Dark Current | 0.171 | 0.85 | 0.92 |
| Read Out | 25.50 | ||
| Total in selected region | 21,238.194 | 106,190.97 | 326.87 |
| Brightest Pixel (single exposure) | 12,019.678 | 60,098.39 | |
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| Global Count Rates | |||
| Source only | 42,476.044 | 212,380.219 | |
| Background (sky+dark) | 19,990.111 | 99,950.56 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 0.047 | 0.234 | |
| Dark Current (arcsec-2) | 7.600 | 38.000 | |
| 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 | 0.28 | ||
| Effective Wavelength | 3738.66 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ |
| Aperture: | F28X50OII |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models G0V 6000 4.5 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 7.63 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 24.2
