ETC Request ID: STIS.ta.1006124

Requested Signal/Noise Ratio = 40.000

gives: Time = 1.9607 seconds

gives: Time to Saturation (for a single exposure) = 88.44 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 5,778.207 11,329.19 106.44
    Background 18.433 36.14 6.01
        Sky 0.001 2.77e-03 0.05
        Dark Current 18.432 36.14 6.01
    Read Out 262.40
Total in selected region 5,796.641 11,365.33 283.23
Brightest Pixel (single exposure) 1,356.820 2,660.28
Global Count Rates
    Source only 6,126.509 12,012.098
    Background (sky+dark) 18,874.369 37,006.52
Background per unit area
    Sky Background (arcsec-2) 0.141 0.277
    Dark Current (arcsec-2) 7.200 14.117
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 4.00
    Fraction of flux 0.94
    Fraction of flux in brightest pixel 0.22
Effective Wavelength 6214.26 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 0.2X0.05ND
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Castelli-Kurucz Models K2V 4750 4.5
Extinction E(B-V): None
Normalization: Renormalized to abmag = 18.85 in filter Galex/NUV
Redshift: None
Emission Lines:
Line at Center 1215.67 Å    FWHM 0.5 Å   Flux 3.2957e-14 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2