ETC Request ID: STIS.ta.848127

Exposure time (seconds) = 2.0000

gives: SNR = 264.2248

gives: Time to Saturation (for a single exposure) = 11.08 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 32 x 32 pixels)
    Source 57,411.991 114,823.98 338.86
    Background 21.269 42.54 6.52
        Sky 1.813 3.63 1.90
        Dark Current 19.456 38.91 6.24
    Read Out 272.00
Total in selected region 57,433.260 114,866.52 434.57
Brightest Pixel (single exposure) 10,830.392 21,660.78
Global Count Rates
    Source only 64,263.199 128,526.399
    Background (sky+dark) 19,980.965 39,961.93
Background per unit area
    Sky Background (arcsec-2) 33.330 66.660
    Dark Current (arcsec-2) 7.600 15.200
Extraction region
box of 32 x 32 pixels
    Effective Sky Area (pixels) 21.76
    Fraction of flux 0.89
    Fraction of flux in brightest pixel 0.17
Effective Wavelength 7755.93 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ/PEAK
Aperture: 52X0.05
Gain: 4.0
# Frames: 1
Binning: 1
Dark:


Target: [point source]
Spectrum: Pickles Models M4V 3111.72K
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 14.1 in filter Johnson/V
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 24.2