ETC Request ID: STIS.ta.1012833

Requested Signal/Noise Ratio = 140.000

gives: Time = 0.8972 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 47,825.38 218.69
    Background 20.240 18.16 4.26
        Sky 1.808 1.62 1.27
        Dark Current 18.432 16.54 4.07
    Read Out 262.40
Total in selected region 53,322.624 47,843.54 341.61
Brightest Pixel (single exposure) 10,030.814 9,000.11
Global Count Rates
    Source only 59,728.347 53,591.055
    Background (sky+dark) 18,932.238 16,986.89
Background per unit area
    Sky Background (arcsec-2) 33.243 29.827
    Dark Current (arcsec-2) 7.200 6.460
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