ETC Request ID: STIS.ta.781643
Requested Signal/Noise Ratio = 40.000
gives: Time = 2.9576 seconds
gives: Time to Saturation (for a single exposure) = 513.86 seconds
| Detailed Information | Count rate | Total counts | Associated noise |
| (e-/s) | (e-) | (e-) | |
| Counts (box of 3 x 3 pixels) | |||
| Source | 709.159 | 2,097.41 | 45.80 |
| Background | 0.608 | 1.80 | 1.34 |
| Sky | 0.437 | 1.29 | 1.14 |
| Dark Current | 0.171 | 0.51 | 0.71 |
| Read Out | 25.50 | ||
| Total in selected region | 709.767 | 2,099.21 | 52.44 |
| Brightest Pixel (single exposure) | 233.528 | 690.68 | |
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| Global Count Rates | |||
| Source only | 1,418.318 | 4,194.823 | |
| Background (sky+dark) | 47,758.559 | 141,250.92 | |
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| Background per unit area | |||
| Sky Background (arcsec-2) | 19.417 | 57.427 | |
| Dark Current (arcsec-2) | 7.600 | 22.478 | |
| 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 | 0.16 | ||
| Effective Wavelength | 7862.06 Å | ||
| Instrument name: | STIS |
| Mode: | Target Acquisition |
| Detector: | CCD |
| Acquisition Mode: | ACQ |
| Aperture: | F28X50LP |
| Gain: | 4.0 |
| # Frames: | 1 |
| Binning: | 1 |
| Dark: |
| Target: [point source] | |
| Spectrum: | Black body at 2850.0K |
| Extinction E(B-V): | None |
| Normalization: | Renormalized to vegamag = 18.8 in filter Johnson/V |
| Redshift: | None |
| Emission Lines: | None |
| Selected background: | |
| Sky Background: | |
| Level: |
These results were computed using: ETC version 24.1
