ETC Request ID: STIS.ta.1006121

Requested Signal/Noise Ratio = 40.000

gives: Time = 1.2509 seconds

gives: Time to Saturation (for a single exposure) = 188.69 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 1,653.431 2,068.30 45.48
    Background 0.164 0.20 0.45
        Sky 0.002 1.96e-03 0.04
        Dark Current 0.162 0.20 0.45
    Read Out 24.60
Total in selected region 1,653.595 2,068.50 51.71
Brightest Pixel (single exposure) 635.955 795.52
Global Count Rates
    Source only 3,306.862 4,136.599
    Background (sky+dark) 18,917.910 23,664.67
Background per unit area
    Sky Background (arcsec-2) 0.070 0.087
    Dark Current (arcsec-2) 7.200 9.007
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 0.19
Effective Wavelength 7102.55 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND3
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Castelli-Kurucz Models K2V 4750 4.5
Extinction E(B-V): None
Normalization: Renormalized to abmag = 18.85 in filter Galex/NUV
Redshift: None
Emission Lines:
Line at Center 1215.67 Å    FWHM 0.5 Å   Flux 3.2957e-14 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2