ETC Request ID: STIS.ta.1372003

Exposure time (seconds) = 5.0000

gives: SNR = 103.3637

gives: Time to Saturation (for a single exposure) = 133.11 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 2,257.652 11,288.26 106.25
    Background 0.666 3.33 1.83
        Sky 0.432 2.16 1.47
        Dark Current 0.234 1.17 1.08
    Read Out 25.20
Total in selected region 2,258.319 11,291.59 109.21
Brightest Pixel (single exposure) 901.515 4,507.58
Global Count Rates
    Source only 4,515.305 22,576.524
    Background (sky+dark) 54,817.750 274,088.75
Background per unit area
    Sky Background (arcsec-2) 19.221 96.103
    Dark Current (arcsec-2) 10.400 52.000
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 6898.85 Å

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


Target: [point source]
Spectrum: Black body at 14000.0K
Extinction E(B-V): None
Normalization: Flux 5e-15 flam at 1340.0 Å
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.2