ETC Request ID: STIS.ta.1013471

Requested Signal/Noise Ratio = 40.000

gives: Time = 0.2097 seconds

gives: Time to Saturation (for a single exposure) = 35.57 seconds


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 9,860.957 2,068.19 45.48
    Background 0.164 0.03 0.19
        Sky 0.002 3.29e-04 0.02
        Dark Current 0.162 0.03 0.18
    Read Out 24.60
Total in selected region 9,861.120 2,068.23 51.70
Brightest Pixel (single exposure) 3,373.427 707.53
Global Count Rates
    Source only 19,721.913 4,136.384
    Background (sky+dark) 18,917.910 3,967.76
Background per unit area
    Sky Background (arcsec-2) 0.070 0.015
    Dark Current (arcsec-2) 7.200 1.510
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 0.17
Effective Wavelength 7687.87 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 M0V 3750 4.5
Extinction E(B-V): None
Normalization: Renormalized to vegamag = 11.624 in filter Johnson/U
Redshift: None
Emission Lines:
Line at Center 1216.65 Å    FWHM 0.5 Å   Flux 5.15e-13 Fλ


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 25.2