ETC Request ID: STIS.ta.1013557

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.6030 seconds

gives: Time to Saturation (for a single exposure) = 95.02 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 3,430.140 2,068.23 45.48
    Background 0.162 0.10 0.31
        Sky 8.945e-06 5.39e-06 2.32e-03
        Dark Current 0.162 0.10 0.31
    Read Out 24.60
Total in selected region 3,430.302 2,068.33 51.71
Brightest Pixel (single exposure) 1,262.899 761.48
Global Count Rates
    Source only 6,860.280 4,136.464
    Background (sky+dark) 18,874.616 11,380.61
Background per unit area
    Sky Background (arcsec-2) 3.975e-04 2.397e-04
    Dark Current (arcsec-2) 7.200 4.341
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 0.18
Effective Wavelength 7330.94 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: Castelli-Kurucz Models G8V 5500 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 5.2 in filter Johnson/U
Redshift: None
Emission Lines:
Line at Center 1215.14 Å    FWHM 0.5 Å   Flux 1.9e-12 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2