ETC Request ID: STIS.ta.1010795

Exposure time (seconds) = 0.3000

gives: SNR = 146.2100

gives: Time to Saturation (for a single exposure) = 5.37 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 73,221.555 21,966.47 148.21
    Background 0.597 0.18 0.42
        Sky 0.435 0.13 0.36
        Dark Current 0.162 0.05 0.22
    Read Out 24.60
Total in selected region 73,222.151 21,966.65 150.24
Brightest Pixel (single exposure) 22,359.104 6,707.73
Global Count Rates
    Source only 146,443.109 43,932.933
    Background (sky+dark) 46,585.728 13,975.72
Background per unit area
    Sky Background (arcsec-2) 19.330 5.799
    Dark Current (arcsec-2) 7.200 2.160
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 0.15
Effective Wavelength 8184.31 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: Pickles Models M4V 3111.72K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 14.18 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2