ETC Request ID: STIS.ta.1013943

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.4984 seconds

gives: Time to Saturation (for a single exposure) = 13.76 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 21,214.392 10,572.47 102.82
    Background 0.164 0.08 0.29
        Sky 0.002 7.81e-04 0.03
        Dark Current 0.162 0.08 0.28
    Read Out 24.60
Total in selected region 21,214.555 10,572.55 105.72
Brightest Pixel (single exposure) 8,719.136 4,345.30
Global Count Rates
    Source only 42,428.784 21,144.939
    Background (sky+dark) 18,917.910 9,427.99
Background per unit area
    Sky Background (arcsec-2) 0.070 0.035
    Dark Current (arcsec-2) 7.200 3.588
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 0.21
Effective Wavelength 6736.11 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 G2V 5860 4.4
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 7.755 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2