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FEROS Exposure Time Calculator

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Optical Echelle Spectroscopy Mode Version 3.2.13
Description.
F.A.Q
Performance
 
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Input Flux Distribution

Blackbody T: Kelvin
Power Law Index: F(λ) is proportional to λ(Index)
Template Spectra Redshift Z:
Object Magnitude: Band:
Note that some template spectra are defined over a limited wavelength range and may not allow calculations for all instrument configurations. The object magnitude is not taken into account for single line sources.
Single line λ: [350-900] nm FWHM: nm Flux 10-16 ergs/s/cm2
Spatial Distribution: Point Source

Sky Conditions

Moon: from new moon
Airmass:
Seeing: arcsec (range: [ 0.30 ; 3.00 ])

Instrument Setup

ADC: enable ADC
Note: In the current model, the ADC transmission curve is included when ADC is enabled, but the only airmass dependency is the reduction of object flux due to the atmospheric extinction. The airmass dependency of the fiber aperture loss due to the differential atmospheric diffraction (which the ADC is correcting for) is currently not considered. For more information, please refer to the FEROS ADC report available on the FEROS instrument webpages.
CCD mode:

In the binning,the second value refers to the direction of the dispersion in the spectra

Exposure Time:

Results

Tables: Spectral Format Expected Counts Graphs: Efficiency Obj Sky Imax S/N
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