ETC Request ID: STIS.ta.1370052
Requested Signal/Noise Ratio = 40.000
gives: Time = 5.9388 seconds
gives: Time to Saturation (for a single exposure) = 603.12 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 351.544 | 2,087.75 | 45.69 |
| Background | 0.235 | 1.40 | 1.18 |
| Sky | 0.001 | 6.25e-03 | 0.08 |
| Dark Current | 0.234 | 1.39 | 1.18 |
| Read Out | 25.20 | ||
| Total in selected region | 351.779 | 2,089.14 | 52.19 |
| Brightest Pixel (single exposure) | 198.966 | 1,181.62 | |
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| Global Count Rates | |||
| Source only | 703.087 | 4,175.498 | |
| Background (sky+dark) | 27,330.034 | 162,307.70 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 0.047 | 0.278 | |
| Dark Current (arcsec-2) | 10.400 | 61.764 | |
| 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 | 3737.37 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ |
| Aperture: | F28X50OII |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: | medium |
| Target: [point source] | |
| Spectrum: | Castelli-Kurucz Models K2V 4750 4.5 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 10.88 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 27.2
