The overall experimental setup is divided into the AtmoHIT module and the Ground Segment. The experiment design includes: mechanical design, electronical design, optical design, thermal design and so on.
The mechanical design of the AtmoHIT experiment can be divided into the spectrometer instrument and the VIS camera instrument.
The electronic concept for the AtmoHIT experiment consist of a total of four printed circuit boards (PCB) for different tasks: the Power-Supply-Unit (PSU); the VisCAM-Board; the Front End-Electronic board (FEE) and the Proximity-Electronic (PXE).
The optical mainly consists of two parts. The fore-optics is the first optical part of the complete spectroscopic system and is the biggest optical component of the setup. A Spatial Heterodyne Spectrometer (SHS) is used to measure the intensities of the oxygen emission lines.
In general, the AtmoHIT experiment is relatively insensitive to temperature changes. Considerable effort was undertaken to temperature stabilize the SHS, which is analysed in the thermal design.