ETC Request ID: STIS.ta.1036822

Requested Signal/Noise Ratio = 40.000

gives: Time = 8.9641 seconds

gives: Time to Saturation (for a single exposure) = 1,169.47 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 230.820 2,069.09 45.49
    Background 0.162 1.45 1.21
        Sky 8.945e-06 8.02e-05 8.95e-03
        Dark Current 0.162 1.45 1.21
    Read Out 24.60
Total in selected region 230.982 2,070.54 51.73
Brightest Pixel (single exposure) 102.611 919.81
Global Count Rates
    Source only 461.641 4,138.172
    Background (sky+dark) 18,874.616 169,193.16
Background per unit area
    Sky Background (arcsec-2) 3.975e-04 0.004
    Dark Current (arcsec-2) 7.200 64.541
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 0.22
Effective Wavelength 6184.72 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND5
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Kurucz Models B5V 15400 3.9
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 6.7 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2