ETC Request ID: STIS.ta.1038328
Requested Signal/Noise Ratio = 40.000
gives: Time = 7.3519 seconds
gives: Time to Saturation (for a single exposure) = 1,063.21 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 281.412 | 2,068.92 | 45.49 |
| Background | 0.162 | 1.19 | 1.09 |
| Sky | 8.945e-06 | 6.58e-05 | 8.11e-03 |
| Dark Current | 0.162 | 1.19 | 1.09 |
| Read Out | 24.60 | ||
| Total in selected region | 281.574 | 2,070.11 | 51.72 |
| Brightest Pixel (single exposure) | 112.866 | 829.78 | |
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| Global Count Rates | |||
| Source only | 562.825 | 4,137.843 | |
| Background (sky+dark) | 18,874.616 | 138,764.73 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 3.975e-04 | 0.003 | |
| Dark Current (arcsec-2) | 7.200 | 52.934 | |
| 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 | 6874.93 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ |
| Aperture: | F25ND5 |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: | medium |
| Target: [point source] | |
| Spectrum: | Kurucz Models O9V 33000. 4.0 |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.59 applied before normalization |
| Normalization: | Renormalized to vegamag = 6.7 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 25.2
