ETC Request ID: STIS.ta.1008917

Exposure time (seconds) = 0.4000

gives: SNR = 122.9158

gives: Time to Saturation (for a single exposure) = 5.53 seconds


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Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 101,704.379 40,681.75 201.70
    Background 18.433 7.37 2.72
        Sky 0.001 5.65e-04 0.02
        Dark Current 18.432 7.37 2.72
    Read Out 262.40
Total in selected region 101,722.812 40,689.12 330.97
Brightest Pixel (single exposure) 21,683.459 8,673.38
Global Count Rates
    Source only 109,713.374 43,885.350
    Background (sky+dark) 18,874.369 7,549.75
Background per unit area
    Sky Background (arcsec-2) 0.141 0.056
    Dark Current (arcsec-2) 7.200 2.880
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 4.00
    Fraction of flux 0.93
    Fraction of flux in brightest pixel 0.20
Effective Wavelength 6954.52 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 0.2X0.05ND
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Bruzual Synthetic Stellar Spectra M2 V
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 8.13 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

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These results were computed using: ETC version 25.2