ETC Request ID: STIS.ta.1392946

Requested Signal/Noise Ratio = 40.000

gives: Time = 2.4651 seconds

gives: Time to Saturation (for a single exposure) = 115.12 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 4,700.339 11,586.59 107.64
    Background 26.625 65.63 8.10
        Sky 0.001 3.46e-03 0.06
        Dark Current 26.624 65.63 8.10
    Read Out 268.80
Total in selected region 4,726.965 11,652.22 289.66
Brightest Pixel (single exposure) 1,042.385 2,569.53
Global Count Rates
    Source only 5,021.020 12,377.084
    Background (sky+dark) 27,262.977 67,204.71
Background per unit area
    Sky Background (arcsec-2) 0.140 0.346
    Dark Current (arcsec-2) 10.400 25.637
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 6677.81 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 3333.0K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 11.22 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.2