ETC Request ID: STIS.ta.1039961

Exposure time (seconds) = 3.0000

gives: SNR = 305.0581

gives: Time to Saturation (for a single exposure) = 7.59 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 31,221.481 93,664.44 306.05
    Background 0.910 2.73 1.65
        Sky 0.748 2.24 1.50
        Dark Current 0.162 0.49 0.70
    Read Out 24.60
Total in selected region 31,222.391 93,667.17 307.04
Brightest Pixel (single exposure) 15,813.909 47,441.73
Global Count Rates
    Source only 59,202.224 177,606.671
    Background (sky+dark) 106,019.251 318,057.75
Background per unit area
    Sky Background (arcsec-2) 33.243 99.729
    Dark Current (arcsec-2) 7.200 21.600
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 0.25
Effective Wavelength 4996.36 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: 50CCD
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Empty
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines:
Line at Center 5008.24 Å    FWHM 8.0 Å   Flux 3e-11 Fλ
Line at Center 4960.295 Å    FWHM 8.0 Å   Flux 1e-11 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2