ETC Request ID: STIS.ta.743495

Exposure time (seconds) = 0.1000

gives: SNR = 95.5008

gives: Time to Saturation (for a single exposure) = 3.18 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 97,299.311 9,729.93 98.64
    Background 0.171 0.02 0.13
        Sky 8.973e-06 8.97e-07 9.47e-04
        Dark Current 0.171 0.02 0.13
    Read Out 25.50
Total in selected region 97,299.482 9,729.95 101.88
Brightest Pixel (single exposure) 37,690.070 3,769.01
Global Count Rates
    Source only 194,598.622 19,459.862
    Background (sky+dark) 19,923.193 1,992.32
Background per unit area
    Sky Background (arcsec-2) 3.988e-04 3.988e-05
    Dark Current (arcsec-2) 7.600 0.760
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 0.19
Effective Wavelength 7064.42 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND5
Gain: 4.0
# Frames: 1
Binning: 1
Dark:


Target: [point source]
Spectrum: Castelli-Kurucz Models F5V 6500 4.0
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 0.37 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 23.2