ETC Request ID: STIS.ta.1167417

Requested Signal/Noise Ratio = 40.000

gives: Time = 1.4916 seconds

gives: Time to Saturation (for a single exposure) = 210.52 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 1,399.475 2,087.49 45.69
    Background 0.659 0.98 0.99
        Sky 0.434 0.65 0.80
        Dark Current 0.225 0.34 0.58
    Read Out 25.20
Total in selected region 1,400.135 2,088.48 52.19
Brightest Pixel (single exposure) 570.024 850.26
Global Count Rates
    Source only 2,798.951 4,174.985
    Background (sky+dark) 53,877.858 80,365.56
Background per unit area
    Sky Background (arcsec-2) 19.296 28.783
    Dark Current (arcsec-2) 10.000 14.916
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 0.20
Effective Wavelength 6788.05 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50LP
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Standard HST Star Spectra GD71 (DA1, 13.032) [1.0, 400109.0 Å]
Extinction E(B-V): None
Normalization: Renormalized to abmag = 15.9 in filter Sloan/G
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 26.1