ETC Request ID: STIS.ta.1303619

Exposure time (seconds) = 0.1000

gives: SNR = 84.3388

gives: Time to Saturation (for a single exposure) = 3.61 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 76,997.077 7,699.71 87.75
    Background 0.226 0.02 0.15
        Sky 0.001 1.09e-04 0.01
        Dark Current 0.225 0.02 0.15
    Read Out 25.20
Total in selected region 76,997.304 7,699.73 91.29
Brightest Pixel (single exposure) 33,224.041 3,322.40
Global Count Rates
    Source only 153,994.155 15,399.415
    Background (sky+dark) 26,283.903 2,628.39
Background per unit area
    Sky Background (arcsec-2) 0.048 0.005
    Dark Current (arcsec-2) 10.000 1.000
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 0.22
Effective Wavelength 6433.06 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: Kurucz Models F2V 6890 4.3
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 5.946 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 26.2