ETC Request ID: STIS.ta.1401752

Exposure time (seconds) = 5.0000

gives: SNR = 86.2594

gives: Time to Saturation (for a single exposure) = 158.49 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 1,614.616 8,073.08 89.85
    Background 0.987 4.93 2.22
        Sky 0.744 3.72 1.93
        Dark Current 0.243 1.21 1.10
    Read Out 26.10
Total in selected region 1,615.603 8,078.01 93.59
Brightest Pixel (single exposure) 757.151 3,785.76
Global Count Rates
    Source only 3,052.088 15,260.438
    Background (sky+dark) 114,977.204 574,886.02
Background per unit area
    Sky Background (arcsec-2) 33.060 165.302
    Dark Current (arcsec-2) 10.800 54.000
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 0.23
Effective Wavelength 5717.74 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: 50CCD
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Black body at 10000.0K
Extinction E(B-V): Milky Way Diffuse (Rv=3.1) = 0.11 applied before normalization
Normalization: Renormalized to vegamag = 17.3 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 28.1