ETC Request ID: STIS.ta.1006968

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.7201 seconds

gives: Time to Saturation (for a single exposure) = 18.01 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 14,681.735 10,572.50 102.82
    Background 0.164 0.12 0.34
        Sky 0.002 1.13e-03 0.03
        Dark Current 0.162 0.12 0.34
    Read Out 24.60
Total in selected region 14,681.899 10,572.62 105.73
Brightest Pixel (single exposure) 6,662.251 4,797.57
Global Count Rates
    Source only 29,363.470 21,145.004
    Background (sky+dark) 18,917.910 13,623.02
Background per unit area
    Sky Background (arcsec-2) 0.070 0.050
    Dark Current (arcsec-2) 7.200 5.185
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 0.23
Effective Wavelength 6006.60 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 A1V 9230 4.1
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 7.97 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2