ETC Request ID: STIS.ta.1009352

Requested Signal/Noise Ratio = 100.000

gives: Time = 0.4707 seconds

gives: Time to Saturation (for a single exposure) = 16.47 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 22,462.649 10,572.47 102.82
    Background 0.164 0.08 0.28
        Sky 0.002 7.38e-04 0.03
        Dark Current 0.162 0.08 0.28
    Read Out 24.60
Total in selected region 22,462.813 10,572.54 105.72
Brightest Pixel (single exposure) 7,284.146 3,428.42
Global Count Rates
    Source only 44,925.299 21,144.931
    Background (sky+dark) 18,917.910 8,904.07
Background per unit area
    Sky Background (arcsec-2) 0.070 0.033
    Dark Current (arcsec-2) 7.200 3.389
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 0.16
Effective Wavelength 7928.69 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: Pickles Models M2I 3451.44K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 8.77 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2