ETC Request ID: STIS.ta.1008983

Exposure time (seconds) = 100.0000

gives: SNR = 78.3798

gives: Time to Saturation (for a single exposure) = 3,158.50 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 67.122 6,712.20 81.93
    Background 0.163 16.30 4.04
        Sky 0.001 0.10 0.32
        Dark Current 0.162 16.20 4.02
    Read Out 24.60
Total in selected region 67.285 6,728.50 85.64
Brightest Pixel (single exposure) 37.993 3,799.27
Global Count Rates
    Source only 134.244 13,424.391
    Background (sky+dark) 18,941.131 1,894,113.08
Background per unit area
    Sky Background (arcsec-2) 0.047 4.657
    Dark Current (arcsec-2) 7.200 720.000
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 3745.17 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: Pickles Models M4V 3111.72K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 11.23 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2