Optical Exposure Time Calculator

VLTI Visibility Calculator

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Optical Interferometry Mode Version 4.1.2

Description.

F.A.Q

Performance

'Call for Proposals' Mode Switch to Expert Mode

Target Definition

 
Target Coordinates:   Epoch: 2000 
    Declination:  deg min sec   Start:   HOUR ANGLE    Timespan:  hours    Simbad Web App

Target Spectrum:
   Uniform:                       Constant over wavelength range
   Blackbody Temp:                 kelvin


Target Geometry:
   Single Disc:  Diameter:                 mas
   Gaussian:     FWHM:                     mas
   Binary Discs:  
                    Angle:                    deg    Angles counted from North to East  
                    Separation:               mas  
                    Diameter, Primary:        mas  
                    Diameter, Secondary:      mas
                    Brightness Ratio:        
    Fits: 
            Angles counted from North to East 
            BitsPerPixel must be -32, Maximum pixel size = 1000x1000.
            Upload a fits file, verify upload, manually enter filename & pixel scale below.
                 
            
                 Pixel Scale:   mas     Midi(5mas)

Observation Setup

Filter:

Offered configurations: (Maximum of 2 Triplets or 1 quadruplet)

VLTI Station Positions

Results




 Input Parameters
 Input Fits Image (user upload required)

 Shadowing
 Delay lines 

 Observation Time Window
 Target altitude
 Target Azimuth
 Airmass

 UV Tracks
 UV Tracks (Over Fourier Transform)

 Visibility
 Visibility Squared
 Loss of Correlated Magnitude
 Baseline Length
 UV Azimuth

 Finito

 Illumination

This software has been prepared in collaboration between ESO and the Jean-Marie Mariotti Centre (Grenoble, France) and written by Bruce Wiseman.