ETC Request ID: STIS.ta.1013594

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.4357 seconds

gives: Time to Saturation (for a single exposure) = 77.38 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 4,747.221 2,068.22 45.48
    Background 0.164 0.07 0.27
        Sky 0.002 6.83e-04 0.03
        Dark Current 0.162 0.07 0.27
    Read Out 24.60
Total in selected region 4,747.385 2,068.29 51.71
Brightest Pixel (single exposure) 1,550.876 675.67
Global Count Rates
    Source only 9,494.443 4,136.431
    Background (sky+dark) 18,917.910 8,241.94
Background per unit area
    Sky Background (arcsec-2) 0.070 0.030
    Dark Current (arcsec-2) 7.200 3.137
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 0.16
Effective Wavelength 7896.12 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 M2V 3500 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 12.497 in filter Johnson/U
Redshift: None
Emission Lines:
Line at Center 1215.14 Å    FWHM 0.5 Å   Flux 2.1e-12 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2