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HAWK-I Exposure Time Calculator

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Infrared Imaging Mode Version 3.2.9
Description.
F.A.Q
Performance

Input Flux Distribution

Uniform (constant with wavelength)
NOTE: Please use the "Uniform" template spectrum instead of this option. 		Target Magnitude and Mag.System:
= Vega
AB
Magnitudes are given per arcsec2
for extended sources.
Template Spectrum:
Redshift z =
Blackbody: Temperature : K
Single Line :
Lambda: nm
Flux: 10-16 ergs/s/cm2 (per arcsec2 for extended sources)
FWHM: nm
Spatial Distribution:
Point Source  
Extended Source diameter: arcsec
The Magnitude (or flux) is given per arcsec2 for extended sources.
Extended Source (per pixel)

Sky Conditions

Airmass:
Seeing: arcsec (FWHM in V band)

Instrument Setup

Filter:
Detector mode: Non-destructive Read-out (NDR)

Results

S/N ratio: S/N = DIT = sec
Exposure Time: NDIT =

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

On submission the model can generate the following graphs:
 (input parameters are replicated in the output page)

Resultant spectrum including sky
Object Spectrum only
Sky Emission Spectrum
Sky Transmission Spectrum
S/N as a function of Exposure Time
Total Efficiency
Input spectrum in physical units
Send comments to ESO/DMD User Support Department<usd-help@eso.org>
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