ETC Request ID: STIS.ta.1013692

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.1015 seconds

gives: Time to Saturation (for a single exposure) = 4.93 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 111,556.249 11,326.59 106.43
    Background 18.433 1.87 1.37
        Sky 0.001 1.43e-04 0.01
        Dark Current 18.432 1.87 1.37
    Read Out 262.40
Total in selected region 111,574.682 11,328.46 283.16
Brightest Pixel (single exposure) 24,359.070 2,473.24
Global Count Rates
    Source only 119,634.125 12,146.753
    Background (sky+dark) 18,874.369 1,916.36
Background per unit area
    Sky Background (arcsec-2) 0.141 0.014
    Dark Current (arcsec-2) 7.200 0.731
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 4.00
    Fraction of flux 0.93
    Fraction of flux in brightest pixel 0.20
Effective Wavelength 6788.53 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 M2V 3500 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 10.03 in filter Johnson/U
Redshift: None
Emission Lines:
Line at Center 1215.14 Å    FWHM 0.5 Å   Flux 4.1e-12 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2