ETC Request ID: STIS.ta.1040017

Exposure time (seconds) = 6.6000

gives: SNR = 150.5348

gives: Time to Saturation (for a single exposure) = 92.55 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 3,522.965 23,251.57 152.48
    Background 0.164 1.08 1.04
        Sky 0.002 0.01 0.10
        Dark Current 0.162 1.07 1.03
    Read Out 24.60
Total in selected region 3,523.128 23,252.65 154.46
Brightest Pixel (single exposure) 1,296.660 8,557.96
Global Count Rates
    Source only 7,045.930 46,503.137
    Background (sky+dark) 18,917.910 124,858.20
Background per unit area
    Sky Background (arcsec-2) 0.070 0.460
    Dark Current (arcsec-2) 7.200 47.520
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 0.18
Effective Wavelength 7332.58 Å

Instrument name: STIS
Mode: Target Acquisition
Detector: CCD
Acquisition Mode: ACQ
Aperture: F25ND3
Gain: 4.0
# Frames: 1
Binning: 1
Dark: medium


Target: [point source]
Spectrum: Castelli-Kurucz Models K5V 4250 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 10.1 in filter Johnson/V
Redshift: None
Emission Lines:
Line at Center 2796.0 Å    FWHM 0.5 Å   Flux 2.04e-13 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2