ETC Request ID: STIS.ta.1283402

Exposure time (seconds) = 1.0000

gives: SNR = 314.7439

gives: Time to Saturation (for a single exposure) = 3.31 seconds

Exposure time calculation HAD WARNINGS.

WARNING MESSAGE: Partial overlap between instrument throughput band and target spectrum. Please doublecheck the wavelength range covered by the selected spectrum, and the instrument documentation for the selected filter.


Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box of 3 x 3 pixels)
    Source 99,695.374 99,695.37 315.75
    Background 0.659 0.66 0.81
        Sky 0.434 0.43 0.66
        Dark Current 0.225 0.23 0.47
    Read Out 25.20
Total in selected region 99,696.033 99,696.03 316.75
Brightest Pixel (single exposure) 36,220.560 36,220.56
Global Count Rates
    Source only 199,390.747 199,390.747
    Background (sky+dark) 53,877.858 53,877.86
Background per unit area
    Sky Background (arcsec-2) 19.296 19.296
    Dark Current (arcsec-2) 10.000 10.000
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 7398.45 Å

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


Target: [point source]
Spectrum: Non-stellar Objects Type 2 Seyfert Galaxy NGC1068 [1000.0, 11000.0 Å]
Extinction E(B-V): Milky Way Diffuse (Rv=3.1) = 0.087 applied before normalization
Normalization: Flux 1e-14 flam at 2800.0 Å
Redshift: z=0.017
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Plots

These results were computed using: ETC version 26.1