ETC Request ID: STIS.ta.622499
Exposure time (seconds) = 3.0000
gives: SNR = 186.1327
gives: Time to Saturation (for a single exposure) = 23.33 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 32 x 32 pixels) | |||
| Source | 22,682.346 | 68,047.04 | 260.86 |
| Background | 22.749 | 68.25 | 8.26 |
| Sky | 5.341 | 16.02 | 4.00 |
| Dark Current | 17.408 | 52.22 | 7.23 |
| Read Out | 256.00 | ||
| Total in selected region | 22,705.095 | 68,115.28 | 365.58 |
| Brightest Pixel (single exposure) | 5,144.299 | 15,432.90 | |
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| Global Count Rates | |||
| Source only | 24,089.605 | 72,268.816 | |
| Background (sky+dark) | 17,996.688 | 53,990.07 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 33.378 | 100.135 | |
| Dark Current (arcsec-2) | 6.800 | 20.400 | |
| Extraction region | |||
| box of 32 x 32 pixels | |||
| Effective Sky Area (pixels) | 64.00 | ||
| Fraction of flux | 0.94 | ||
| Fraction of flux in brightest pixel | 0.21 | ||
| Effective Wavelength | 6512.66 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ/PEAK |
| Aperture: | 52X0.1 |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: |
| Target: [point source] | |
| Spectrum: | Flat in units of Fλ |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 15.0 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 22.2
