ETC Request ID: STIS.ta.1454455

Exposure time (seconds) = 1.5000

gives: SNR = 143.9833

gives: Time to Saturation (for a single exposure) = 20.88 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 14,261.556 21,392.33 146.26
    Background 0.675 1.01 1.01
        Sky 0.432 0.65 0.81
        Dark Current 0.243 0.36 0.60
    Read Out 26.10
Total in selected region 14,262.232 21,393.35 148.58
Brightest Pixel (single exposure) 5,746.302 8,619.45
Global Count Rates
    Source only 28,523.113 42,784.669
    Background (sky+dark) 55,864.519 83,796.78
Background per unit area
    Sky Background (arcsec-2) 19.219 28.829
    Dark Current (arcsec-2) 10.800 16.200
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 6848.37 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: User uploaded spectrum: Sk69d191_sed_new.fits
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 28.2