ETC Request ID: STIS.ta.825227

Exposure time (seconds) = 1.0000

gives: SNR = 134.8807

gives: Time to Saturation (for a single exposure) = 13.90 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 18,821.508 18,821.51 137.19
    Background 0.171 0.17 0.41
        Sky 8.950e-06 8.95e-06 2.99e-03
        Dark Current 0.171 0.17 0.41
    Read Out 25.50
Total in selected region 18,821.679 18,821.68 139.54
Brightest Pixel (single exposure) 8,631.371 8,631.37
Global Count Rates
    Source only 37,643.015 37,643.015
    Background (sky+dark) 19,923.193 19,923.19
Background per unit area
    Sky Background (arcsec-2) 3.978e-04 3.978e-04
    Dark Current (arcsec-2) 7.600 7.600
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 0.23
Effective Wavelength 5914.48 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND5
Gain: 4.0
# Frames: 1
Binning: 1
Dark:


Target: [point source]
Spectrum: Pickles Models B1-2III 19952.6K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 1.97 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 24.2