ETC Request ID: STIS.ta.1009205

Exposure time (seconds) = 1.3000

gives: SNR = 163.6878

gives: Time to Saturation (for a single exposure) = 16.07 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 21,066.561 27,386.53 165.49
    Background 0.597 0.78 0.88
        Sky 0.435 0.57 0.75
        Dark Current 0.162 0.21 0.46
    Read Out 24.60
Total in selected region 21,067.158 27,387.31 167.31
Brightest Pixel (single exposure) 7,467.011 9,707.11
Global Count Rates
    Source only 42,133.122 54,773.059
    Background (sky+dark) 46,585.728 60,561.45
Background per unit area
    Sky Background (arcsec-2) 19.330 25.129
    Dark Current (arcsec-2) 7.200 9.360
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 7521.01 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50LP
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Flat in units of Fλ
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 14.24 in filter Johnson/V
Redshift: z=0.3
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2