ETC Request ID: STIS.ta.1009012

Exposure time (seconds) = 3.0000

gives: SNR = 109.6686

gives: Time to Saturation (for a single exposure) = 48.98 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 11,807.860 35,423.58 188.21
    Background 18.433 55.30 7.44
        Sky 0.001 4.23e-03 0.07
        Dark Current 18.432 55.30 7.44
    Read Out 262.40
Total in selected region 11,826.293 35,478.88 323.01
Brightest Pixel (single exposure) 2,450.032 7,350.09
Global Count Rates
    Source only 12,820.578 38,461.734
    Background (sky+dark) 18,874.369 56,623.11
Background per unit area
    Sky Background (arcsec-2) 0.141 0.423
    Dark Current (arcsec-2) 7.200 21.600
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 4.00
    Fraction of flux 0.92
    Fraction of flux in brightest pixel 0.19
Effective Wavelength 7136.11 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: Pickles Models M4V 3111.72K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 10.69 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2