ETC Request ID: STIS.ta.1013957

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.9317 seconds

gives: Time to Saturation (for a single exposure) = 27.95 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 11,348.063 10,572.53 102.82
    Background 0.164 0.15 0.39
        Sky 0.002 1.46e-03 0.04
        Dark Current 0.162 0.15 0.39
    Read Out 24.60
Total in selected region 11,348.226 10,572.69 105.73
Brightest Pixel (single exposure) 4,292.859 3,999.48
Global Count Rates
    Source only 22,696.126 21,145.066
    Background (sky+dark) 18,917.910 17,625.05
Background per unit area
    Sky Background (arcsec-2) 0.070 0.065
    Dark Current (arcsec-2) 7.200 6.708
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 0.19
Effective Wavelength 7190.44 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 K4V 4560 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 8.7 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2