TMT IRMOS Simulations
SLGLAO
The files linked below are simulated point spread functions for TMT
IRMOS fed by a SLGLAO corrected field of view. PSF's have been
generated for angular offsets between 0 and 120 arcseconds from the
laser guide star, for observation wavelengths from .6 to 2.2 microns.
Diffraction and seeing limited PSF's have also been posted. Flux
normalization may be carried out using the diffraction limited PSFs.
These PSFs were generated using a Monte Carlo simulation, and the
bumpy appearance results from the random realization of atmospheric
turbulence used in the simulation.
Each picture below shows a PSF for a different case. In order to see
the low level structure in the images, the PSFs have been clipped at
10 percent of the diffraction limited peak value, and are shown on a
log stretch. Each image is a link to a fits file containing the PSF.
There's a pixel scale keyword in the header of each fits file, so you
can sort out the image size and sampling. There's also a bunch of
other header information on the properties of the atmospheric
turbulence. You can right click each image to save the files
individually, or download them in a 300 Mb tar file by clicking the
link below.
All the PSFs
SLGLAO PSFs
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| Diffraction limit
| Seeing limit
| SLGLAO 0 arcsec
| SLGLAO 60 arcsec
| SLGLAO 120 arcsec
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| 2.2 um
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| 1.65 um
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| 1.25 um
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| 1 um
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| .8 um
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| .6 um
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MOAO
These PSF's have been simulated by Don Gavel. The files have been
modified to contain the same information as for the files above. Note
that the simulation parameters differ in a number of ways - most
notably in the turbulence profile assumed for the simulations. Please
check the fits header for information on pixel scales.
The first row of PSF's were computed assuming no blurring from errors in
tip tilt compensation, while the second row assume residual tip tilt errors
of order 25 mas.
All the PSFs
MOAO PSFs
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| MOAO 0 arcsec
| MOAO 75 arcsec
| MOAO 150 arcsec
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1.238 um
no TT errors
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1.238 um
TT errors
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