ETC Request ID: STIS.ta.1005884

Exposure time (seconds) = 1.0000

gives: SNR = 50.1253

gives: Time to Saturation (for a single exposure) = 98.33 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 3,017.019 3,017.02 54.93
    Background 0.597 0.60 0.77
        Sky 0.435 0.43 0.66
        Dark Current 0.162 0.16 0.40
    Read Out 24.60
Total in selected region 3,017.615 3,017.62 60.19
Brightest Pixel (single exposure) 1,220.369 1,220.37
Global Count Rates
    Source only 6,034.037 6,034.037
    Background (sky+dark) 46,585.728 46,585.73
Background per unit area
    Sky Background (arcsec-2) 19.330 19.330
    Dark Current (arcsec-2) 7.200 7.200
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 6826.76 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: Castelli-Kurucz Models O3V 45000 4.5
Extinction E(B-V): LMC Diffuse (Rv=3.41) = 0.1 applied before normalization
Normalization: Renormalized to vegamag = 12.8 in filter WFC3/UVIS1/F225W
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2