ETC Request ID: STIS.ta.1006961

Requested Signal/Noise Ratio = 100.000

gives: Time = 7.4184 seconds

gives: Time to Saturation (for a single exposure) = 233.50 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 1,425.315 10,573.48 102.83
    Background 0.164 1.21 1.10
        Sky 0.002 0.01 0.11
        Dark Current 0.162 1.20 1.10
    Read Out 24.60
Total in selected region 1,425.478 10,574.70 105.73
Brightest Pixel (single exposure) 513.915 3,812.40
Global Count Rates
    Source only 2,850.629 21,146.970
    Background (sky+dark) 18,917.910 140,339.71
Background per unit area
    Sky Background (arcsec-2) 0.070 0.517
    Dark Current (arcsec-2) 7.200 53.412
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 0.18
Effective Wavelength 7436.81 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND3
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Kurucz Models K7V 4060 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 11.16 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2