ETC Request ID: STIS.ta.1029808

Exposure time (seconds) = 1.5000

gives: SNR = 445.8252

gives: Time to Saturation (for a single exposure) = 2.63 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 168,601.021 252,901.53 502.89
    Background 23.751 35.63 5.97
        Sky 5.319 7.98 2.82
        Dark Current 18.432 27.65 5.26
    Read Out 262.40
Total in selected region 168,624.772 252,937.16 567.27
Brightest Pixel (single exposure) 45,667.534 68,501.30
Global Count Rates
    Source only 177,531.941 266,297.912
    Background (sky+dark) 19,044.573 28,566.86
Background per unit area
    Sky Background (arcsec-2) 33.243 49.865
    Dark Current (arcsec-2) 7.200 10.800
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 64.00
    Fraction of flux 0.95
    Fraction of flux in brightest pixel 0.26
Effective Wavelength 4828.14 Å

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


Target: [point source]
Spectrum: Standard HST Star Spectra Grw+70°5824 (DA3, 12.77) [1140.56, 24976.7 Å]
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2