ETC Request ID: STIS.ta.1013951

Requested Signal/Noise Ratio = 100.000

gives: Time = 9.7606 seconds

gives: Time to Saturation (for a single exposure) = 332.57 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 1,083.313 10,573.83 102.83
    Background 0.164 1.60 1.26
        Sky 0.002 0.02 0.12
        Dark Current 0.162 1.58 1.26
    Read Out 24.60
Total in selected region 1,083.476 10,575.43 105.74
Brightest Pixel (single exposure) 360.827 3,521.90
Global Count Rates
    Source only 2,166.625 21,147.657
    Background (sky+dark) 18,917.910 184,650.95
Background per unit area
    Sky Background (arcsec-2) 0.070 0.680
    Dark Current (arcsec-2) 7.200 70.277
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 = 11.767 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2