ETC Request ID: STIS.ta.828014

Exposure time (seconds) = 0.1000

gives: SNR = 338.3579

gives: Time to Saturation (for a single exposure) = 0.32 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 1,656,272.945 165,627.29 406.97
    Background 21.269 2.13 1.46
        Sky 1.813 0.18 0.43
        Dark Current 19.456 1.95 1.39
    Read Out 272.00
Total in selected region 1,656,294.214 165,629.42 489.50
Brightest Pixel (single exposure) 377,795.242 37,779.52
Global Count Rates
    Source only 1,757,992.718 175,799.272
    Background (sky+dark) 19,980.965 1,998.10
Background per unit area
    Sky Background (arcsec-2) 33.330 3.333
    Dark Current (arcsec-2) 7.600 0.760
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 21.76
    Fraction of flux 0.94
    Fraction of flux in brightest pixel 0.21
Effective Wavelength 6465.49 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 52X0.05
Gain: 4.0
# Frames: 1
Binning: 1
Dark:


Target: [point source]
Spectrum: Castelli-Kurucz Models K2V 4750 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 9.5 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 24.2