ETC Request ID: STIS.ta.1370814
Exposure time (seconds) = 1.0000
gives: SNR = 398.6420
gives: Time to Saturation (for a single exposure) = 2.25 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 159,548.612 | 159,548.61 | 399.44 |
| Background | 0.666 | 0.67 | 0.82 |
| Sky | 0.432 | 0.43 | 0.66 |
| Dark Current | 0.234 | 0.23 | 0.48 |
| Read Out | 25.20 | ||
| Total in selected region | 159,549.278 | 159,549.28 | 400.23 |
| Brightest Pixel (single exposure) | 53,366.091 | 53,366.09 | |
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| Global Count Rates | |||
| Source only | 319,097.223 | 319,097.223 | |
| Background (sky+dark) | 54,817.750 | 54,817.75 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 19.221 | 19.221 | |
| Dark Current (arcsec-2) | 10.400 | 10.400 | |
| 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 | 0.17 | ||
| Effective Wavelength | 7790.79 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ |
| Aperture: | F28X50LP |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: | medium |
| Target: [point source] | |
| Spectrum: | Kurucz Models M2V 3500 4.6 |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 8.251 in filter Johnson/K |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 27.2
