MANIFEST IFU

A simple model for GMT MANIFEST IFU. There are 3 possible types of IFU to choose from:

• a 7 hexagons IFU,
• a round IFU,
• a slit IFU.

The model computes the seeing image and write it to field.png and for the chosen IFU, it masks the image, write it to <hex|round|slit>_ifu_field.png and print the IFU throughput.

Usage

The throughput of a circular IFU of diameter 0.5arcsec for r0=20cm , 50degree of zenith at 800nm is found with:

ifu --r0 20 -z 50 -b I round -d 0.5

Replacing the round IFU with a slit the same size:

ifu --r0 20 -z 50 -b I slit -w 0.5

or with the 7 hexagons IFU

ifu --r0 20 -z 50 -b I hex -w 0.5

Installing

To use the model, you need first to install Rust and then install the model with:

cargo install ifu

Running

The model, with the default 7 hexagon IFU, is run with:

ifu

or run each IFU type with

• 7 hexagons IFU

ifu hex

• round IFU

ifu round

• slit IFU

ifu slit

Check the model options with:

ifu --help

or check each IFU options with

• 7 hexagons IFU

ifu hex --help

• round IFU

ifu round --help

• slit IFU

ifu slit --help