We feel that steel is not a preferred option as it has major design consequences. The problems caused by the interface of the Aluminum HROS to the Steel is considered to be a main area of concern and further investigation is seen as high priority and will be look at in more detail in the near future. The handling and access design is not detailed yet. We will conform to Gemini restrictions and standard methods. These issues will be fully documented for CDR, but a preliminary report will be sent to Gemini for their comment and approval.
All mounts are pads, which sit on difficult to access welded parts.
The use of flexible manpower from agencies will alleviate this problem as if additional effort is needed additional manpower can be introduced quickly to keep us up to schedule but tracking the cost implication. This information is already in existence. It will be passed on the optical design team for Zemax analysis. This idea was looked at after CoDR but was dropped as the structure flexure was seriously effected.