ETC Request ID: STIS.ta.1012844

Requested Signal/Noise Ratio = 130.000

gives: Time = 0.8179 seconds

gives: Time to Saturation (for a single exposure) = 11.96 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 53,302.384 43,596.99 208.80
    Background 20.240 16.56 4.07
        Sky 1.808 1.48 1.22
        Dark Current 18.432 15.08 3.88
    Read Out 262.40
Total in selected region 53,322.624 43,613.54 335.36
Brightest Pixel (single exposure) 10,030.814 8,204.39
Global Count Rates
    Source only 59,728.347 48,852.901
    Background (sky+dark) 18,932.238 15,485.02
Background per unit area
    Sky Background (arcsec-2) 33.243 27.190
    Dark Current (arcsec-2) 7.200 5.889
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 21.76
    Fraction of flux 0.89
    Fraction of flux in brightest pixel 0.17
Effective Wavelength 7771.91 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 52X0.05
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Pickles Models M4V 3111.72K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 14.18 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2