ETC Request ID: STIS.ta.1006971

Requested Signal/Noise Ratio = 100.000

gives: Time = 6.0905 seconds

gives: Time to Saturation (for a single exposure) = 207.53 seconds


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Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 1,736.017 10,573.29 102.83
    Background 0.164 1.00 1.00
        Sky 0.002 9.55e-03 0.10
        Dark Current 0.162 0.99 0.99
    Read Out 24.60
Total in selected region 1,736.180 10,574.29 105.73
Brightest Pixel (single exposure) 578.216 3,521.65
Global Count Rates
    Source only 3,472.033 21,146.580
    Background (sky+dark) 18,917.910 115,220.42
Background per unit area
    Sky Background (arcsec-2) 0.070 0.424
    Dark Current (arcsec-2) 7.200 43.852
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 0.17
Effective Wavelength 7810.00 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 M2V 3500 4.6
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 11.255 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2