ETC Request ID: STIS.ta.1003503

Requested Signal/Noise Ratio = 40.000

gives: Time = 103.7892 seconds

gives: Time to Saturation (for a single exposure) = 14,470.95 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 20.298 2,106.67 45.90
    Background 0.597 61.95 7.87
        Sky 0.435 45.14 6.72
        Dark Current 0.162 16.81 4.10
    Read Out 24.60
Total in selected region 20.894 2,168.62 52.67
Brightest Pixel (single exposure) 8.292 860.67
Global Count Rates
    Source only 40.595 4,213.337
    Background (sky+dark) 46,585.728 4,835,093.97
Background per unit area
    Sky Background (arcsec-2) 19.330 2,006.235
    Dark Current (arcsec-2) 7.200 747.282
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 0.20
Effective Wavelength 6815.59 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 30000.0K
Extinction E(B-V): None
Normalization: Renormalized to abmag = 21.0 in filter Sloan/R
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2