ETC Request ID: STIS.ta.826560

Exposure time (seconds) = 0.8000

gives: SNR = 443.7987

gives: Time to Saturation (for a single exposure) = 1.68 seconds


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Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 317,846.080 254,276.86 504.26
    Background 21.269 17.02 4.12
        Sky 1.813 1.45 1.20
        Dark Current 19.456 15.56 3.95
    Read Out 272.00
Total in selected region 317,867.349 254,293.88 572.96
Brightest Pixel (single exposure) 71,606.956 57,285.57
Global Count Rates
    Source only 338,153.884 270,523.108
    Background (sky+dark) 19,980.965 15,984.77
Background per unit area
    Sky Background (arcsec-2) 33.330 26.664
    Dark Current (arcsec-2) 7.600 6.080
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 21.76
    Fraction of flux 0.94
    Fraction of flux in brightest pixel 0.21
Effective Wavelength 6562.27 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 52X0.05
Gain: 4.0
# Frames: 1
Binning: 1
Dark:


Target: [point source]
Spectrum: Kurucz Models K4V 4560 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 11.33 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 24.2