IRMS Exposure Time Calculator
Only for lough estimation. Last update July 2011.
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!! UNDER CONSTRUCTION !!
Mode:
IRMS Spectroscopy 60mas
IRMS Spectroscopy w/o AO
IRMS Imaging 60mas
IRMS Imaging w/o AO
J
H
K
=
m
AB
Point source
Seeing:
(use circular aperture of given diameter)
Extended source
(magnitude is per square arcsecond; use square aperture) ....Under construction
Aperture =
arcseconds
Slit Width =
arcseconds
for S/N ratio =
for exposure time =
seconds
Total Throughput:
Photon Energy:
J
Sky Background:
photons/pix/s