ETC Request ID: STIS.ta.1362316

Requested Signal/Noise Ratio = 40.000

gives: Time = 7.9493 seconds

gives: Time to Saturation (for a single exposure) = 1,157.72 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 262.940 2,090.18 45.72
    Background 0.667 5.30 2.30
        Sky 0.433 3.44 1.86
        Dark Current 0.234 1.86 1.36
    Read Out 25.20
Total in selected region 263.607 2,095.48 52.25
Brightest Pixel (single exposure) 103.652 823.95
Global Count Rates
    Source only 525.879 4,180.350
    Background (sky+dark) 54,873.474 436,203.49
Background per unit area
    Sky Background (arcsec-2) 19.260 153.099
    Dark Current (arcsec-2) 10.400 82.672
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 6973.31 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: Pickles Models A0I 9727.47K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 18.2 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.1