Abstract Details
| Name: Eswar Reddy Affiliation: IIA, Bangalore Conference ID: ASI2017_621 Title : TMT-WFOS optical design analysis and flexure compensation tool Authors and Co-Authors : Devika Divakar(IIA), Arun Surya(IIA), S. Sriram,(IIA) T. Sivarani (IIA),Renee Kupke(UCO), Maureen Savage(UCO), Kevin Bundy(UCO), Matt Radovan(UCO) Abstract Type : Poster Abstract Category : Instrumentation and Techniques Abstract : MT-WFOS optical design analysis and flexure compensation tool Devika Divakar, Arun Surya, S. Sriram, T. Sivarani, Renee Kupke, Maureen Savage, Kevin Bundy, Matt Radovan WFOS is one of the first-generation wide-field seeing-limited instrument for TMT. The spectrograph has two color channels simultaneously spanning 310- 550nm and 500-1100nm passbands. The instrument will be mounted at the TMT +X Nasmyth focus which is coaxial with the telescope elevation axis. The entire instrument needs to be rotated with respect to Nasmyth axis in order to correct for the field rotation during an observation. This can introduce a variable flexure during an exposure. Here, we present some of the ongoing work that was done as part of the TMT-India OMDR (Opto mechanical Design requirements) work package in collaboration with UCO (University of California Observatories, Santa cruz). The optimized optical design configuration that meets the ambitious science requirements will be presented along with various performance metrics of the design. We also present the flexible flexure compensation tool that will be used in the design of close and open loop flexure compensation design of the instrument. |