ETC Request ID: STIS.ta.1433966

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.2806 seconds

gives: Time to Saturation (for a single exposure) = 7.85 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 37,926.334 10,640.39 103.15
    Background 0.675 0.19 0.44
        Sky 0.432 0.12 0.35
        Dark Current 0.243 0.07 0.26
    Read Out 26.10
Total in selected region 37,927.009 10,640.58 106.40
Brightest Pixel (single exposure) 15,277.291 4,286.11
Global Count Rates
    Source only 75,852.668 21,280.779
    Background (sky+dark) 55,864.519 15,673.02
Background per unit area
    Sky Background (arcsec-2) 19.219 5.392
    Dark Current (arcsec-2) 10.800 3.030
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 6849.82 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: AV266_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