ETC Request ID: STIS.ta.1006162

Exposure time (seconds) = 0.1000

gives: SNR = 101.8961

gives: Time to Saturation (for a single exposure) = 2.40 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 109,563.242 10,956.32 104.67
    Background 0.164 0.02 0.13
        Sky 0.002 1.57e-04 0.01
        Dark Current 0.162 0.02 0.13
    Read Out 24.60
Total in selected region 109,563.405 10,956.34 107.52
Brightest Pixel (single exposure) 49,918.301 4,991.83
Global Count Rates
    Source only 219,126.483 21,912.648
    Background (sky+dark) 18,917.910 1,891.79
Background per unit area
    Sky Background (arcsec-2) 0.070 0.007
    Dark Current (arcsec-2) 7.200 0.720
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 0.23
Effective Wavelength 5971.49 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: Castelli-Kurucz Models A0V 9500 4.0
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 5.792 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2