ETC Request ID: STIS.ta.1165995

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.3704 seconds

gives: Time to Saturation (for a single exposure) = 52.00 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 5,634.927 2,086.93 45.68
    Background 0.227 0.08 0.29
        Sky 0.002 5.80e-04 0.02
        Dark Current 0.225 0.08 0.29
    Read Out 25.20
Total in selected region 5,635.154 2,087.02 52.17
Brightest Pixel (single exposure) 2,307.512 854.60
Global Count Rates
    Source only 11,269.854 4,173.867
    Background (sky+dark) 26,257.865 9,724.78
Background per unit area
    Sky Background (arcsec-2) 0.070 0.026
    Dark Current (arcsec-2) 10.000 3.704
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 0.20
Effective Wavelength 6756.98 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: Castelli-Kurucz Models G2V 5750 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 9.2 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 26.1