ETC Request ID: STIS.ta.1011338

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.6011 seconds

gives: Time to Saturation (for a single exposure) = 27.92 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 18,843.866 11,327.29 106.43
    Background 18.433 11.08 3.33
        Sky 0.001 8.48e-04 0.03
        Dark Current 18.432 11.08 3.33
    Read Out 262.40
Total in selected region 18,862.300 11,338.37 283.18
Brightest Pixel (single exposure) 4,298.320 2,583.77
Global Count Rates
    Source only 20,001.156 12,022.947
    Background (sky+dark) 18,874.369 11,345.62
Background per unit area
    Sky Background (arcsec-2) 0.141 0.085
    Dark Current (arcsec-2) 7.200 4.328
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 4.00
    Fraction of flux 0.94
    Fraction of flux in brightest pixel 0.21
Effective Wavelength 6465.44 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 0.2X0.05ND
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Black body at 3850.0K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 9.585 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2