ETC Request ID: STIS.ta.1449674

Exposure time (seconds) = 0.3000

gives: SNR = 98.5082

gives: Time to Saturation (for a single exposure) = 8.65 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 34,477.184 10,343.16 101.70
    Background 0.675 0.20 0.45
        Sky 0.432 0.13 0.36
        Dark Current 0.243 0.07 0.27
    Read Out 26.10
Total in selected region 34,477.859 10,343.36 105.00
Brightest Pixel (single exposure) 13,867.962 4,160.39
Global Count Rates
    Source only 68,954.368 20,686.310
    Background (sky+dark) 55,864.519 16,759.36
Background per unit area
    Sky Background (arcsec-2) 19.219 5.766
    Dark Current (arcsec-2) 10.800 3.240
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 6857.86 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: SK-69D140_adopted_sed.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