ETC Request ID: STIS.ta.1444201

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.7165 seconds

gives: Time to Saturation (for a single exposure) = 20.07 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 14,850.197 10,640.65 103.15
    Background 0.675 0.48 0.70
        Sky 0.432 0.31 0.56
        Dark Current 0.243 0.17 0.42
    Read Out 26.10
Total in selected region 14,850.872 10,641.13 106.41
Brightest Pixel (single exposure) 5,980.191 4,285.00
Global Count Rates
    Source only 29,700.393 21,281.301
    Background (sky+dark) 55,864.519 40,028.75
Background per unit area
    Sky Background (arcsec-2) 19.219 13.771
    Dark Current (arcsec-2) 10.800 7.739
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 6851.44 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: SK-68D16_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 28.2