ETC Request ID: STIS.ta.1362309

Requested Signal/Noise Ratio = 18.000

gives: Time = 1.2461 seconds

gives: Time to Saturation (for a single exposure) = 115.00 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 4,015.978 5,004.25 70.74
    Background 27.220 33.92 5.82
        Sky 0.596 0.74 0.86
        Dark Current 26.624 33.18 5.76
    Read Out 268.80
Total in selected region 4,043.198 5,038.16 278.01
Brightest Pixel (single exposure) 1,043.449 1,300.23
Global Count Rates
    Source only 4,241.076 5,284.737
    Background (sky+dark) 27,263.572 33,972.70
Background per unit area
    Sky Background (arcsec-2) 33.127 41.279
    Dark Current (arcsec-2) 10.400 12.959
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 7.20
    Fraction of flux 0.95
    Fraction of flux in brightest pixel 0.25
Effective Wavelength 5274.65 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 0.2X0.09
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Pickles Models B0I 26001.6K
Extinction E(B-V): Milky Way Diffuse (Rv=3.1) = 0.3 applied before normalization
Normalization: Renormalized to vegamag = 16.6 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.1