ETC Request ID: STIS.ta.828016

Exposure time (seconds) = 0.1000

gives: SNR = 263.8718

gives: Time to Saturation (for a single exposure) = 0.46 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 1,145,860.919 114,586.09 338.51
    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 1,145,882.188 114,588.22 434.25
Brightest Pixel (single exposure) 261,370.472 26,137.05
Global Count Rates
    Source only 1,216,233.809 121,623.381
    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 = 9.9 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 24.2