ETC Request ID: STIS.ta.1008973

Exposure time (seconds) = 5.0000

gives: SNR = 114.9096

gives: Time to Saturation (for a single exposure) = 76.91 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 2,756.934 13,784.67 117.41
    Background 0.163 0.82 0.90
        Sky 0.001 5.24e-03 0.07
        Dark Current 0.162 0.81 0.90
    Read Out 24.60
Total in selected region 2,757.097 13,785.49 119.96
Brightest Pixel (single exposure) 1,560.236 7,801.18
Global Count Rates
    Source only 5,513.868 27,569.340
    Background (sky+dark) 18,941.131 94,705.65
Background per unit area
    Sky Background (arcsec-2) 0.047 0.233
    Dark Current (arcsec-2) 7.200 36.000
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 0.28
Effective Wavelength 3737.98 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50OII
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 = 7.97 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2