ETC Request ID: STIS.ta.197926
Exposure time (seconds) = 1.0000
gives: SNR = 174.2190
gives: Time to Saturation (for a single exposure) = 11.86 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 30,918.299 | 30,918.30 | 175.84 |
| Background | 0.588 | 0.59 | 0.77 |
| Sky | 0.443 | 0.44 | 0.67 |
| Dark Current | 0.145 | 0.14 | 0.38 |
| Read Out | 24.00 | ||
| Total in selected region | 30,918.887 | 30,918.89 | 177.47 |
| Brightest Pixel (single exposure) | 12,137.825 | 12,137.82 | |
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| Global Count Rates | |||
| Source only | 61,836.598 | 61,836.598 | |
| Background (sky+dark) | 11,038,818.769 | 11,038,818.77 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 19.682 | 19.682 | |
| Dark Current (arcsec-2) | 6.440 | 6.440 | |
| 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 | 0.20 | ||
| Effective Wavelength | 6992.01 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ |
| Aperture: | F28X50LP |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | |
| Dark: |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models O3V 45000 4.5 |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.4 applied before normalization |
| Normalization: | Renormalized to Johnson V = 13.09 in magnitudes relative to Vega |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 19.2
