ETC Request ID: STIS.ta.1008915

Exposure time (seconds) = 5.0000

gives: SNR = 106.3921

gives: Time to Saturation (for a single exposure) = 89.12 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 2,379.175 11,895.87 109.07
    Background 0.163 0.82 0.90
        Sky 0.001 5.24e-03 0.07
        Dark Current 0.162 0.81 0.90
    Read Out 24.60
Total in selected region 2,379.338 11,896.69 111.81
Brightest Pixel (single exposure) 1,346.453 6,732.26
Global Count Rates
    Source only 4,758.350 23,791.749
    Background (sky+dark) 18,941.131 94,705.65
Background per unit area
    Sky Background (arcsec-2) 0.047 0.233
    Dark Current (arcsec-2) 7.200 36.000
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 0.28
Effective Wavelength 3737.98 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50OII
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