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VIMOS Exposure Time Calculator

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Optical Multi-Object Spectroscopy Mode Version 3.2.10
Description.
F.A.Q
Performance

Input Flux Distribution

 



 Continuum (Flat Spectra)
 Blackbody: T =		 Kelvin
 Template Spectra:	  Redshift Z = 

   Single line
	Wavelength:         nm
	Flux:               10-16 ergs/s/cm2 (per arcsec2 for extended sources)
	FWHM:               nm (Minimum value: 0.50)

 Object Magnitude:       		Band: 

Spatial Distribution:

 Point Source
		 Extended Source

 
 	Surface Brightness               Semi-Major Axis  arcsec   
 For De Vaucouleurs and Exponential profiles, the Projected Semi-Major Axis is intended
 as the Effective Radius along the slit.

Sky Conditions

Days From New Moon: Airmass: Seeing: arcsec

The sky brightness is determined by the moon phase and the instrument efficiency according to this table.


Optical Path

Grism:             
Slit:       width    length in arcsecs 
Detector: 

Observation

 S/N:			Value    Plotting range  %
 Exposure Time (s):	Value    Plotting range  %

  Flat Field Accuracy: 0.0  



Results

On submission the model can generate the following graphs:
Object Spectrum Sky Spectrum at central row Total spectrum (object+sky) at central row Input spectrum in physical units Total Efficiency and Wavelength Range Signal to noise versus wavelength 2D simulated image

This software has been prepared in collaboration between ESO and the VIMOS consortium
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