ETC Request ID: STIS.ta.1371510

Requested Signal/Noise Ratio = 70.000

gives: Time = 59.4957 seconds

gives: Time to Saturation (for a single exposure) = 3,240.02 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 92.460 5,500.98 74.17
    Background 0.666 39.65 6.30
        Sky 0.432 25.73 5.07
        Dark Current 0.234 13.92 3.73
    Read Out 25.20
Total in selected region 93.127 5,540.63 78.59
Brightest Pixel (single exposure) 37.037 2,203.53
Global Count Rates
    Source only 184.920 11,001.964
    Background (sky+dark) 54,817.750 3,261,421.63
Background per unit area
    Sky Background (arcsec-2) 19.221 1,143.549
    Dark Current (arcsec-2) 10.400 618.756
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 6892.09 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: Black body at 15000.0K
Extinction E(B-V): None
Normalization: Renormalized to abmag = 19.4 in filter Sloan/R
Redshift: z=0.03
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.2