ETC Request ID: STIS.ta.1366551

Requested Signal/Noise Ratio = 40.000

gives: Time = 67.5765 seconds

gives: Time to Saturation (for a single exposure) = 33,794.23 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 31.292 2,114.58 45.98
    Background 0.666 45.04 6.71
        Sky 0.432 29.22 5.41
        Dark Current 0.234 15.81 3.98
    Read Out 25.20
Total in selected region 31.958 2,159.62 52.86
Brightest Pixel (single exposure) 3.551 239.96
Global Count Rates
    Source only 174.766 11,810.050
    Background (sky+dark) 54,817.750 3,704,392.88
Background per unit area
    Sky Background (arcsec-2) 19.221 1,298.867
    Dark Current (arcsec-2) 10.400 702.796
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 = 18.28 in filter Sloan/G
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 27.2