ETC Request ID: STIS.ta.1431929

Exposure time (seconds) = 1.0000

gives: SNR = 180.4431

gives: Time to Saturation (for a single exposure) = 9.04 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 33,227.900 33,227.90 182.29
    Background 0.675 0.68 0.82
        Sky 0.432 0.43 0.66
        Dark Current 0.243 0.24 0.49
    Read Out 26.10
Total in selected region 33,228.575 33,228.58 184.15
Brightest Pixel (single exposure) 13,273.270 13,273.27
Global Count Rates
    Source only 66,455.799 66,455.799
    Background (sky+dark) 55,864.519 55,864.52
Background per unit area
    Sky Background (arcsec-2) 19.219 19.219
    Dark Current (arcsec-2) 10.800 10.800
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 6896.40 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50LP
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: User uploaded spectrum: mk42_wmbO3I_sed.fits
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

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These results were computed using: ETC version 28.1