Input Flux Distribution

 Uniform (constant with wavelength)
 Blackbody: Temperature:  Kelvin

Object Magnitude:  Vega  AB

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

Sky Conditions

Moon FLI: Airmass: Almanac Almanac Time UT Time step forward/back sec min hour day week month year MJD Target Target coordinates Name or ID:   α °      δ ° toggle units      UT rise culm. set Hour Angle azimuth altitude zenith distance airmass FLI moon/sun phase angle moon/target separation Target Moon Sun An advanced almanac is available in the ESO SkyCalc sky model calculator

PWV:     0.10 0.25 0.50 1.0 1.5 2.5 3.5 5.0 7.5 10.0 20.0 30.0 mm     Probability % of realising the PWV ≤ 10.00 mm

Seeing/Image Quality: The seeing and image quality are irrelevant for extended sources Turbulence Category: 10% (seeing ≤ 0.5") 20% (seeing ≤ 0.6") 30% (seeing ≤ 0.7") 50% (seeing ≤ 0.8") 70% (seeing ≤ 1.0") 85% (seeing ≤ 1.3") 100% (all)   (FWHM of the atmospheric PSF outside the telescope at zenith at 500 nm) IQ: arcsec FWHM at the airmass and reference wavelength               The corresponding seeing and turbulence category will be indicated in the output page Image Quality is not a parameter in AO modes

Instrument Setup

Slit: 
                                                                            0.6 width
                                                                            1.0 width
                                                                            2.0 width	
                                                                           arcsec
  
Grisms:
	Low Resolution:
       Red
       Blue
    
    
	Medium Resolution:
       H
       K
    

Detector

DIT:  s 

Results

The total exposure time is the product of DIT (Detector Integration Time), NDIT (number of DITs), and NINT (number of integrations). This exposure time does not take into account instrument and telescope overheads.

 Exposure Time settings:
                  NDIT:  
                  NINT: 

 Resultant spectrum including sky
 Object spectrum only
 Sky spectrum only
 Sky Transmission spectrum only
 S/N as a function of wavelength
 Total efficiency and wavelength Range
 Input spectrum in physical units