ETC Request ID: STIS.ta.1433940

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.2184 seconds

gives: Time to Saturation (for a single exposure) = 6.10 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 48,726.044 10,640.35 103.15
    Background 0.675 0.15 0.38
        Sky 0.432 0.09 0.31
        Dark Current 0.243 0.05 0.23
    Read Out 26.10
Total in selected region 48,726.719 10,640.50 106.40
Brightest Pixel (single exposure) 19,660.673 4,293.32
Global Count Rates
    Source only 97,452.087 21,280.705
    Background (sky+dark) 55,864.519 12,199.19
Background per unit area
    Sky Background (arcsec-2) 19.219 4.197
    Dark Current (arcsec-2) 10.800 2.358
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 6840.38 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: User uploaded spectrum: AV235_STIS_E230M_c1978_sed.fits
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 28.1