ETC Request ID: STIS.ta.1009844

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.1871 seconds

gives: Time to Saturation (for a single exposure) = 29.33 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 11,055.763 2,068.24 45.48
    Background 0.597 0.11 0.33
        Sky 0.435 0.08 0.29
        Dark Current 0.162 0.03 0.17
    Read Out 24.60
Total in selected region 11,056.360 2,068.35 51.71
Brightest Pixel (single exposure) 4,091.128 765.34
Global Count Rates
    Source only 22,111.525 4,136.482
    Background (sky+dark) 46,585.728 8,714.96
Background per unit area
    Sky Background (arcsec-2) 19.330 3.616
    Dark Current (arcsec-2) 7.200 1.347
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 7305.02 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: Power Law with index -1.0
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 14.63 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2