Poster abstract details
FRIDA Integral Field Unit Opto-mechanical Design
Abstract
FRIDA will provide an integral field spectroscopy (IFS) mode using an image slicer Integral Field Unit (IFU). The IFU slices the image on 30 “slices” that are projected as a “pseudoslit” for the spectrograph. The IFU design is based on University of Florida FISICA where the mirrors arrays are diamond turned on monolithic metal blocks.
FRIDA IFU is composed of 3 mirrors blocks with 30 spherical mirrors each. It also has a Schwarzschild relay based on two off axis spherical mirrors and a two parabolic and off axis afocal system. Including the two insertion mirrors the IFU holds 96 metal mirrors.
Each block or individual mirror is attached on its own mechanical mounting. In order to study beam interferences with mechanical parts, ghosts and scattered light, an iterative optical-mechanical modeling was developed. In this work this iterative modeling is described including pictures showing actual ray-tracing on the mechanical components.
FRIDA IFU is composed of 3 mirrors blocks with 30 spherical mirrors each. It also has a Schwarzschild relay based on two off axis spherical mirrors and a two parabolic and off axis afocal system. Including the two insertion mirrors the IFU holds 96 metal mirrors.
Each block or individual mirror is attached on its own mechanical mounting. In order to study beam interferences with mechanical parts, ghosts and scattered light, an iterative optical-mechanical modeling was developed. In this work this iterative modeling is described including pictures showing actual ray-tracing on the mechanical components.