ETC Request ID: STIS.ta.1013425

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.4247 seconds

gives: Time to Saturation (for a single exposure) = 20.20 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 26,669.159 11,327.04 106.43
    Background 18.433 7.83 2.80
        Sky 0.001 5.99e-04 0.02
        Dark Current 18.432 7.83 2.80
    Read Out 262.40
Total in selected region 26,687.593 11,334.87 283.18
Brightest Pixel (single exposure) 5,940.515 2,523.08
Global Count Rates
    Source only 28,456.363 12,086.107
    Background (sky+dark) 18,874.369 8,016.40
Background per unit area
    Sky Background (arcsec-2) 0.141 0.060
    Dark Current (arcsec-2) 7.200 3.058
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 4.00
    Fraction of flux 0.94
    Fraction of flux in brightest pixel 0.21
Effective Wavelength 6645.61 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 0.2X0.05ND
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Castelli-Kurucz Models M0V 3750 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 11.624 in filter Johnson/U
Redshift: None
Emission Lines:
Line at Center 1216.65 Å    FWHM 0.5 Å   Flux 5.15e-13 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2