ETC Request ID: STIS.ta.1011411

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.4512 seconds

gives: Time to Saturation (for a single exposure) = 122.41 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 4,583.825 2,068.22 45.48
    Background 0.163 0.07 0.27
        Sky 0.001 4.93e-04 0.02
        Dark Current 0.162 0.07 0.27
    Read Out 24.60
Total in selected region 4,583.988 2,068.29 51.71
Brightest Pixel (single exposure) 980.328 442.32
Global Count Rates
    Source only 9,167.649 4,136.434
    Background (sky+dark) 18,944.019 8,547.52
Background per unit area
    Sky Background (arcsec-2) 0.049 0.022
    Dark Current (arcsec-2) 7.200 3.249
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 0.11
Effective Wavelength 9330.94 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50OIII
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Black body at 3550.0K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 9.72 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2