ETC Request ID: STIS.ta.1011987
Requested Signal/Noise Ratio = 40.000
gives: Time = 2.7952 seconds
gives: Time to Saturation (for a single exposure) = 395.16 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 740.009 | 2,068.46 | 45.48 |
| Background | 0.162 | 0.45 | 0.67 |
| Sky | 8.945e-06 | 2.50e-05 | 5.00e-03 |
| Dark Current | 0.162 | 0.45 | 0.67 |
| Read Out | 24.60 | ||
| Total in selected region | 740.171 | 2,068.91 | 51.71 |
| Brightest Pixel (single exposure) | 303.673 | 848.82 | |
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| Global Count Rates | |||
| Source only | 1,480.018 | 4,136.912 | |
| Background (sky+dark) | 18,874.616 | 52,757.89 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 3.975e-04 | 0.001 | |
| Dark Current (arcsec-2) | 7.200 | 20.125 | |
| 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 | 0.21 | ||
| Effective Wavelength | 6745.28 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: | Castelli-Kurucz Models O5V 41000 4.5 |
| Extinction E(B-V): | Milky Way Diffuse (Rv=3.1) = 0.53 applied before normalization |
| Normalization: | Renormalized to vegamag = 5.62 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 25.2
