ETC Request ID: STIS.ta.1008988

Exposure time (seconds) = 2.0000

gives: SNR = 123.5852

gives: Time to Saturation (for a single exposure) = 27.48 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 20,480.457 40,960.91 202.39
    Background 18.433 36.87 6.07
        Sky 0.001 2.82e-03 0.05
        Dark Current 18.432 36.86 6.07
    Read Out 262.40
Total in selected region 20,498.891 40,997.78 331.44
Brightest Pixel (single exposure) 4,366.465 8,732.93
Global Count Rates
    Source only 22,093.248 44,186.496
    Background (sky+dark) 18,874.369 37,748.74
Background per unit area
    Sky Background (arcsec-2) 0.141 0.282
    Dark Current (arcsec-2) 7.200 14.400
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 6954.52 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: Bruzual Synthetic Stellar Spectra M2 V
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 9.87 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2