ETC Request ID: STIS.ta.1435698

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.2644 seconds

gives: Time to Saturation (for a single exposure) = 7.37 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 40,248.986 10,640.38 103.15
    Background 0.675 0.18 0.42
        Sky 0.432 0.11 0.34
        Dark Current 0.243 0.06 0.25
    Read Out 26.10
Total in selected region 40,249.661 10,640.56 106.40
Brightest Pixel (single exposure) 16,277.373 4,303.15
Global Count Rates
    Source only 80,497.971 21,280.760
    Background (sky+dark) 55,864.519 14,768.56
Background per unit area
    Sky Background (arcsec-2) 19.219 5.081
    Dark Current (arcsec-2) 10.800 2.855
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 0.20
Effective Wavelength 6827.57 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: AV70_newsed.fits
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 28.1