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SOFIA Instrument Time Estimator (SITE)
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In the four sections of this form, select the appropriate instrument, astronomical source, telescope, observing condition constraints and calculation method. Click on the button to submit the parameters from all the sections to the server. The results are reported in a separate web page that can be resized and printed.
Instrument
FLITECAM
FORCAST
HAWC
Instrument properties:
(
more info
)
Filter:
J (1.25um)
H (1.65um)
K (2.2um)
K Dark (2.45um)
KL (2.8um)
L' (3.76um)
M' (4.77um)
Calculation Method
Calculation method:
(
more info
)
Select imaging or spectroscopy and the calculation method (note: second method is not available for spectroscopy)
Total S/N ratio resulting from a total time of
secs
Total integration time to achieve a S/N ratio of
Astronomical Source Definition
Spatial profile and continuum brightness:
(
more info
)
Choose point or extended source.
Point source
(
nominal spatial profile
) with spatially integrated brightness
Jy
W/m^2/um
ergs/s/cm^2/um
ergs/s/cm^2/Hz
mag
Extended source
having uniform surface brightness
Jy / sq arcsec
W/m^2/um / sq arcsec
ergs/s/cm^2/um / sq arcsec
ergs/s/cm^2/um / steradians
ergs/s/cm^2/Hz / sq arcsec
mag / sq arcsec
Emission line:
(
more info
)
in addition to the above continuum. The output SNR or observing time will be for the sum of continuum plus line.
Single emission line at wavelength
microns with line flux
W/m^2
ergs/s/cm^2
Observing Condition Constraints
Note: you should read the
explanatory notes
for the meaning of the water vapor overburden.
Zenith Water Vapor Overburden:
2 um
5 um
7 um
10 um
20 um
Elevation Angle:
20
o
40
o
60
o
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