ETC Request ID: STIS.ta.1302390

Exposure time (seconds) = 7.0000

gives: SNR = 91.8036

gives: Time to Saturation (for a single exposure) = 307.22 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 1,288.939 9,022.58 94.99
    Background 0.227 1.59 1.26
        Sky 0.002 0.01 0.10
        Dark Current 0.225 1.57 1.25
    Read Out 25.20
Total in selected region 1,289.166 9,024.16 98.28
Brightest Pixel (single exposure) 390.600 2,734.20
Global Count Rates
    Source only 2,577.879 18,045.152
    Background (sky+dark) 26,257.865 183,805.05
Background per unit area
    Sky Background (arcsec-2) 0.070 0.487
    Dark Current (arcsec-2) 10.000 70.000
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 8215.94 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 = 12.28 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 26.2