ETC Request ID: STIS.ta.1003062

Exposure time (seconds) = 0.1000

gives: SNR = 100.6323

gives: Time to Saturation (for a single exposure) = 3.71 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 106,996.884 10,699.69 103.44
    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 106,997.481 10,699.75 106.32
Brightest Pixel (single exposure) 32,355.009 3,235.50
Global Count Rates
    Source only 213,993.767 21,399.377
    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 0.15
Effective Wavelength 8224.44 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: User uploaded spectrum: G249-11_scaled.dat
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

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These results were computed using: ETC version 25.2