ETC Request ID: STIS.ta.827364

Exposure time (seconds) = 0.6000

gives: SNR = 125.2532

gives: Time to Saturation (for a single exposure) = 11.52 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 27,189.657 16,313.79 127.73
    Background 0.173 0.10 0.32
        Sky 0.002 9.42e-04 0.03
        Dark Current 0.171 0.10 0.32
    Read Out 25.50
Total in selected region 27,189.830 16,313.90 130.25
Brightest Pixel (single exposure) 10,415.342 6,249.21
Global Count Rates
    Source only 54,379.315 32,627.589
    Background (sky+dark) 19,966.577 11,979.95
Background per unit area
    Sky Background (arcsec-2) 0.070 0.042
    Dark Current (arcsec-2) 7.600 4.560
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 7124.14 Å

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


Target: [point source]
Spectrum: Flat in units of Fλ
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 7.86 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 24.2