ETC Request ID: STIS.ta.1437100

Exposure time (seconds) = 0.5000

gives: SNR = 117.1715

gives: Time to Saturation (for a single exposure) = 11.12 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 28,759.753 14,379.88 119.92
    Background 0.675 0.34 0.58
        Sky 0.432 0.22 0.46
        Dark Current 0.243 0.12 0.35
    Read Out 26.10
Total in selected region 28,760.428 14,380.21 122.72
Brightest Pixel (single exposure) 10,788.233 5,394.12
Global Count Rates
    Source only 57,519.505 28,759.753
    Background (sky+dark) 55,864.519 27,932.26
Background per unit area
    Sky Background (arcsec-2) 19.219 9.610
    Dark Current (arcsec-2) 10.800 5.400
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 0.19
Effective Wavelength 7234.54 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F28X50LP
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Black body at 5500.0K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 13.06 in filter Johnson/R
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 28.1