ETC Request ID: STIS.ta.1373628

Exposure time (seconds) = 15.0000

gives: SNR = 111.6660

gives: Time to Saturation (for a single exposure) = 454.32 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 871.876 13,078.14 114.36
    Background 0.236 3.53 1.88
        Sky 0.002 0.02 0.15
        Dark Current 0.234 3.51 1.87
    Read Out 25.20
Total in selected region 872.112 13,081.67 117.12
Brightest Pixel (single exposure) 264.133 3,961.99
Global Count Rates
    Source only 1,743.752 26,156.282
    Background (sky+dark) 27,306.262 409,593.93
Background per unit area
    Sky Background (arcsec-2) 0.069 1.039
    Dark Current (arcsec-2) 10.400 156.000
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 8217.33 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: Bruzual Synthetic Stellar Spectra M6 V
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 12.7 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.2