ETC Request ID: STIS.ta.825229
Exposure time (seconds) = 0.1000
gives: SNR = 460.0713
gives: Time to Saturation (for a single exposure) = 0.16 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 32 x 32 pixels) | |||
| Source | 2,697,256.735 | 269,725.67 | 519.35 |
| Background | 19.456 | 1.95 | 1.39 |
| Sky | 2.336e-04 | 2.34e-05 | 4.83e-03 |
| Dark Current | 19.456 | 1.95 | 1.39 |
| Read Out | 272.00 | ||
| Total in selected region | 2,697,276.192 | 269,727.62 | 586.27 |
| Brightest Pixel (single exposure) | 740,686.246 | 74,068.62 | |
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| Global Count Rates | |||
| Source only | 2,835,359.288 | 283,535.929 | |
| Background (sky+dark) | 19,922.944 | 1,992.29 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 0.016 | 0.002 | |
| Dark Current (arcsec-2) | 7.600 | 0.760 | |
| Extraction region | |||
| box of 32 x 32 pixels | |||
| Effective Sky Area (pixels) | 6.00 | ||
| Fraction of flux | 0.95 | ||
| Fraction of flux in brightest pixel | 0.26 | ||
| Effective Wavelength | 4659.34 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ/PEAK |
| Aperture: | 0.3X0.05ND |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: |
| Target: [point source] | |
| Spectrum: | Pickles Models B1-2III 19952.6K |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 1.97 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 24.2
