ETC Request ID: STIS.ta.1366541

Requested Signal/Noise Ratio = 40.000

gives: Time = 108.9448 seconds

gives: Time to Saturation (for a single exposure) = 53,388.29 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 19.563 2,131.25 46.17
    Background 0.666 72.61 8.52
        Sky 0.432 47.11 6.86
        Dark Current 0.234 25.49 5.05
    Read Out 25.20
Total in selected region 20.229 2,203.86 53.28
Brightest Pixel (single exposure) 2.248 244.87
Global Count Rates
    Source only 109.259 11,903.167
    Background (sky+dark) 54,817.750 5,972,110.56
Background per unit area
    Sky Background (arcsec-2) 19.221 2,093.994
    Dark Current (arcsec-2) 10.400 1,133.026
Extraction region
box of 3 x 3 pixels
    Effective Sky Area (pixels) 9.00
Effective Wavelength 7520.16 Å

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


Target: [extended source]
Source diameter (arcsec): 0.4
Spectrum: Flat in units of Fλ
Extinction E(B-V): None
Normalization: Renormalized to abmag = 18.79 in filter Sloan/G
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.2