ETC Request ID: STIS.ta.1443861

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.9533 seconds

gives: Time to Saturation (for a single exposure) = 26.51 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 11,162.457 10,640.79 103.15
    Background 0.675 0.64 0.80
        Sky 0.432 0.41 0.64
        Dark Current 0.243 0.23 0.48
    Read Out 26.10
Total in selected region 11,163.133 10,641.44 106.41
Brightest Pixel (single exposure) 4,525.988 4,314.47

Global Count Rates
    Source only 22,324.915 21,281.585
    Background (sky+dark) 55,864.519 53,253.75

Background per unit area
    Sky Background (arcsec-2) 19.219 18.321
    Dark Current (arcsec-2) 10.800 10.295

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 6813.08 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: BI272_newsed.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 28.2