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VIMOS Exposure Time Calculator

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Optical Imaging Mode Version 3.2.7
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


 Extended Source: Integral Photometry


	Aperture Radius  arcsec


 Indicate the desired aperture magnitude in the broad band associated filter, and the aperture radius




	




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


Mirrors (M1 to M3 ):  88.000 % at 670 nm
Filter:             


Detector:  Read Mode:  slow 
           Binning:  1 




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:

 Input spectrum in physical units
 Total Efficiency
 CCD Illumination
 S/N as a function of Seeing (for pointlike sources only)
 S/N as a function of Exposure Time
 2D simulated image (pointlike sources only)





 


           













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


Send comments to ESO/DMD User Support Department<usd-help@eso.org>




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