ETC Request ID: STIS.ta.1006667

Exposure time (seconds) = 0.3000

gives: SNR = 67.2443

gives: Time to Saturation (for a single exposure) = 16.82 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 16,874.593 5,062.38 71.15
    Background 0.164 0.05 0.22
        Sky 0.002 4.70e-04 0.02
        Dark Current 0.162 0.05 0.22
    Read Out 24.60
Total in selected region 16,874.756 5,062.43 75.28
Brightest Pixel (single exposure) 7,135.412 2,140.62
Global Count Rates
    Source only 33,749.185 10,124.756
    Background (sky+dark) 18,917.910 5,675.37
Background per unit area
    Sky Background (arcsec-2) 0.070 0.021
    Dark Current (arcsec-2) 7.200 2.160
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 0.21
Effective Wavelength 6571.55 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: Bruzual Synthetic Stellar Spectra B3 V
Extinction E(B-V): Milky Way Diffuse (Rv=3.1) = 0.6 applied before normalization
Normalization: Renormalized to vegamag = 8.01 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2