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VIRCAM Exposure Time Calculator

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Infrared Imaging Mode Version 3.3.3
Description.
F.A.Q
Performance

Input Flux Distribution

Uniform (constant with wavelength) Target Magnitude and Mag.System:
= Vega
AB
Magnitudes are given per arcsec2
for extended sources.
Stellar template spectrum: Spectral Type :
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  
Extended Source (per pixel)

Instrument Setup

Filter:

Sky Conditions

Airmass :  
Seeing : arcsec (FWHM in V band)

Observing Setup

Detector on-chip integration time DIT = sec (Note: minimum possible DIT is 1.0 sec)

Exposure Time:
S/N ratio:
Observation Strategy:
       Exposure coadds (Ndit):
       Exposure loops (Nexp):
       Microstepping pattern (NxM):
       Jitter pattern (Njitter):
       Number of pawprints (Npaw):

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

Input spectrum in physical units
CCD Illumination, Object only
Sky Transmission Spectrum
System Efficiency
S/N as a function of Exposure Time
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