ETC Request ID: STIS.ta.1380958

Exposure time (seconds) = 0.1000

gives: SNR = 78.6294

gives: Time to Saturation (for a single exposure) = 5.52 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 67,631.392 6,763.14 82.24
    Background 0.234 0.02 0.15
        Sky 8.890e-06 8.89e-07 9.43e-04
        Dark Current 0.234 0.02 0.15
    Read Out 25.20
Total in selected region 67,631.626 6,763.16 86.01
Brightest Pixel (single exposure) 21,731.360 2,173.14
Global Count Rates
    Source only 135,262.784 13,526.278
    Background (sky+dark) 27,263.223 2,726.32
Background per unit area
    Sky Background (arcsec-2) 3.951e-04 3.951e-05
    Dark Current (arcsec-2) 10.400 1.040
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 0.16
Effective Wavelength 7968.65 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND5
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Pickles Models M0III 3819.44K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 1.64 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.2