ETC Request ID: STIS.ta.1362308

Requested Signal/Noise Ratio = 18.000

gives: Time = 23.0278 seconds

gives: Time to Saturation (for a single exposure) = 2,301.61 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 218.173 5,024.04 70.88
    Background 27.220 626.82 25.04
        Sky 0.596 13.73 3.71
        Dark Current 26.624 613.09 24.76
    Read Out 268.80
Total in selected region 245.393 5,650.87 279.11
Brightest Pixel (single exposure) 52.137 1,200.61
Global Count Rates
    Source only 231.189 5,323.771
    Background (sky+dark) 27,263.572 627,820.34
Background per unit area
    Sky Background (arcsec-2) 33.127 762.836
    Dark Current (arcsec-2) 10.400 239.489
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 7.20
    Fraction of flux 0.94
    Fraction of flux in brightest pixel 0.23
Effective Wavelength 6077.05 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 0.2X0.09
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Pickles Models B0I 26001.6K
Extinction E(B-V): Milky Way Diffuse (Rv=3.1) = 0.8 applied before normalization
Normalization: Renormalized to vegamag = 19.7 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.1