ETC Request ID: STIS.ta.1012246

Requested Signal/Noise Ratio = 40.000

gives: Time = 57.8680 seconds

gives: Time to Saturation (for a single exposure) = 2,747.05 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 197.525 11,430.38 106.91
    Background 23.751 1,374.42 37.07
        Sky 5.319 307.79 17.54
        Dark Current 18.432 1,066.62 32.66
    Read Out 262.40
Total in selected region 221.276 12,804.80 285.76
Brightest Pixel (single exposure) 43.683 2,527.86
Global Count Rates
    Source only 211.273 12,225.979
    Background (sky+dark) 19,044.573 1,102,072.05
Background per unit area
    Sky Background (arcsec-2) 33.243 1,923.715
    Dark Current (arcsec-2) 7.200 416.650
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 64.00
    Fraction of flux 0.93
    Fraction of flux in brightest pixel 0.21
Effective Wavelength 6714.36 Å

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


Target: [point source]
Spectrum: Kurucz Models K4V 4560 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 20.0 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2