ETC Request ID: STIS.ta.1186983

Requested Signal/Noise Ratio = 40.000

gives: Time = 15.1574 seconds

gives: Time to Saturation (for a single exposure) = 2,203.80 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 138.089 2,093.08 45.75
    Background 0.659 9.99 3.16
        Sky 0.434 6.58 2.57
        Dark Current 0.225 3.41 1.85
    Read Out 25.20
Total in selected region 138.748 2,103.07 52.33
Brightest Pixel (single exposure) 54.451 825.34
Global Count Rates
    Source only 276.179 4,186.156
    Background (sky+dark) 53,877.858 816,649.59
Background per unit area
    Sky Background (arcsec-2) 19.296 292.485
    Dark Current (arcsec-2) 10.000 151.574
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 6975.13 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: Black body at 10000.0K
Extinction E(B-V): None
Normalization: Renormalized to abmag = 19.0 in filter Sloan/G
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 26.1