ETC Request ID: STIS.ta.1032433

Requested Signal/Noise Ratio = 100.000

gives: Time = 1.7851 seconds

gives: Time to Saturation (for a single exposure) = 49.55 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 5,922.582 10,572.66 102.82
    Background 0.164 0.29 0.54
        Sky 0.002 2.80e-03 0.05
        Dark Current 0.162 0.29 0.54
    Read Out 24.60
Total in selected region 5,922.746 10,572.95 105.73
Brightest Pixel (single exposure) 2,421.730 4,323.13
Global Count Rates
    Source only 11,845.165 21,145.316
    Background (sky+dark) 18,917.910 33,771.18
Background per unit area
    Sky Background (arcsec-2) 0.070 0.124
    Dark Current (arcsec-2) 7.200 12.853
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 6765.35 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND3
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Kurucz Models G5V 5770 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 9.15 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