LIRIS
Long-slit Intermediate Resolution Infrared Spectrograph for the WHT
Exposure Time Calculator
WARNING: THIS CALCULATOR HAS NOT BEEN UPGRADED. BASED ON VERY PRELIMINARY ESTIMATES

SOURCE
Source type:
Object Mag: mag or mag/arcsec2
SKY
Airmass:
Seeing:
arcsec


INSTRUMENT:
 
Mode:   Band:
IMAGE
Narrow filter: 


 
SPECTROSCOPY
 
Slit width:
arcsec
Grism:

EXPOSURE TIME

Total exposure time:sec
Number of reads:  (double correlated =1)
The total exposure time is the product of integration time and
 the Number of frames.


OUTPUT
Signal =   e / sec per pix
GRAPH:  S/N =  per pix





Created by: Carlos Dominguez.
carlosd@iac.es

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