ETC Request ID: STIS.ta.1038602

Exposure time (seconds) = 0.1000

gives: SNR = 161.9235

gives: Time to Saturation (for a single exposure) = 1.00 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 268,110.504 26,811.05 163.74
    Background 0.164 0.02 0.13
        Sky 0.002 1.57e-04 0.01
        Dark Current 0.162 0.02 0.13
    Read Out 24.60
Total in selected region 268,110.667 26,811.07 165.58
Brightest Pixel (single exposure) 119,608.948 11,960.89
Global Count Rates
    Source only 536,221.007 53,622.101
    Background (sky+dark) 18,917.910 1,891.79
Background per unit area
    Sky Background (arcsec-2) 0.070 0.007
    Dark Current (arcsec-2) 7.200 0.720
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 0.22
Effective Wavelength 6153.20 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND3
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Castelli-Kurucz Models B0III 29000 3.5
Extinction E(B-V): Milky Way Diffuse (Rv=3.1) = 0.51 applied before normalization
Normalization: Renormalized to vegamag = 4.96 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2