ETC Request ID: STIS.ta.1005893

Exposure time (seconds) = 0.5000

gives: SNR = 231.5340

gives: Time to Saturation (for a single exposure) = 2.34 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 186,426.717 93,213.36 305.31
    Background 23.751 11.88 3.45
        Sky 5.319 2.66 1.63
        Dark Current 18.432 9.22 3.04
    Read Out 262.40
Total in selected region 186,450.468 93,225.23 402.59
Brightest Pixel (single exposure) 51,364.909 25,682.45
Global Count Rates
    Source only 195,891.349 97,945.674
    Background (sky+dark) 19,044.573 9,522.29
Background per unit area
    Sky Background (arcsec-2) 33.243 16.622
    Dark Current (arcsec-2) 7.200 3.600
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 4618.00 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: 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 Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2