ETC Request ID: STIS.ta.820953

Exposure time (seconds) = 1.0000

gives: SNR = 221.9114

gives: Time to Saturation (for a single exposure) = 5.90 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 49,887.142 49,887.14 223.35
    Background 0.608 0.61 0.78
        Sky 0.437 0.44 0.66
        Dark Current 0.171 0.17 0.41
    Read Out 25.50
Total in selected region 49,887.749 49,887.75 224.81
Brightest Pixel (single exposure) 20,335.821 20,335.82
Global Count Rates
    Source only 99,774.283 99,774.283
    Background (sky+dark) 47,758.524 47,758.52
Background per unit area
    Sky Background (arcsec-2) 19.417 19.417
    Dark Current (arcsec-2) 7.600 7.600
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 6782.84 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50LP
Gain: 4.0
# Frames: 1
Binning: 1
Dark:


Target: [point source]
Spectrum: Black body at 55000.0K
Extinction E(B-V): None
Normalization: Flux 5.5e-12 flam at 1300.0 Å
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 24.2