ETC Request ID: STIS.ta.1016210

Exposure time (seconds) = 0.1000

gives: SNR = 238.6107

gives: Time to Saturation (for a single exposure) = 0.56 seconds


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Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 575,339.625 57,533.96 239.86
    Background 0.597 0.06 0.24
        Sky 0.435 0.04 0.21
        Dark Current 0.162 0.02 0.13
    Read Out 24.60
Total in selected region 575,340.222 57,534.02 241.12
Brightest Pixel (single exposure) 215,910.815 21,591.08
Global Count Rates
    Source only 1,150,679.250 115,067.925
    Background (sky+dark) 46,585.728 4,658.57
Background per unit area
    Sky Background (arcsec-2) 19.330 1.933
    Dark Current (arcsec-2) 7.200 0.720
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 0.19
Effective Wavelength 7232.29 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: Bruzual Synthetic Stellar Spectra K0 V
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 10.4 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

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These results were computed using: ETC version 25.2