The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 46 Issue 1
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- Pages.38.4-39
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- 2021
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- 1226-2692(pISSN)
Optomechanical Design and Structure Analysis of Prototype Siderostat for Testing Local Volume Mapper Telescope Control System
- Lee, Sunwoo (Kyung Hee University) ;
- Han, Jimin (Kyung Hee University) ;
- Ahn, Hojae (Kyung Hee University) ;
- Kim, Changgon (Kyung Hee University) ;
- Yang, Mingyeong (Kyung Hee University) ;
- Ji, Tae-geun (Kyung Hee University) ;
- Lee, Sumin (Kyung Hee University) ;
- Kim, Taeeun (Kyung Hee University) ;
- Pak, Soojong (Kyung Hee University) ;
- Konidaris, Nicholas P. (Carnegie Institution for Science) ;
- Drory, Niv (University of Texas at Austin) ;
- Froning, Cynthia S. (University of Texas at Austin) ;
- Hebert, Anthony (Carnegie Institution for Science) ;
- Bilgi, Pavan (Carnegie Institution for Science) ;
- Blanc, Guillermo A. (Carnegie Institution for Science) ;
- Lanz, Alicia E. (Carnegie Institution for Science) ;
- Hull, Charles L (Carnegie Institution for Science) ;
- Kollmeier, Juna A. (Carnegie Institution for Science) ;
- Ramirez, Solange (Carnegie Institution for Science) ;
- Wachter, Stefanie (Carnegie Institution for Science) ;
- Kreckel, Kathryn (University of Heidelberg) ;
- Pellegrini, Eric (University of Heidelberg) ;
- Almeida, Andr'es (Universidad de La Serena) ;
- Case, Scott (Australian Astronomical Optics) ;
- Zhelem, Ross (Australian Astronomical Optics) ;
- Feger, Tobias (Australian Astronomical Optics) ;
- Lawrence, Jon (Australian Astronomical Optics) ;
- Lesser, Michael (University of Arizona) ;
- Herbst, Tom (Max Planck Institut Fur Astronome) ;
- Sanchez-Gallego, Jose (University of Washington) ;
- Bershady, Matthew A (University of Wisconsin-Madison) ;
- Chattopadhyay, Sabyasachi (University of Wisconsin-Madison) ;
- Hauser, Andrew (University of Wisconsin-Madison) ;
- Smith, Michael (University of Wisconsin-Madison) ;
- Wolf, Marsha J (University of Wisconsin-Madison) ;
- Yan, Renbin (University of Kentucky)
- Published : 2021.04.13
Abstract
The Local Volume Mapper (LVM), for the Sloan Digital Sky Survey V, consists of four 16 cm telescopes with three fiber spectrographs in the Las Campanas Observatory in Chile. With the fixed telescopes on optical tables, the Alt-Alt mounted siderostats point and guide targets during spectrograph exposures. We are developing the integrated LVM instrument control software. Considering international travel restrictions caused by the COVID-19 pandemic in 2021, we decided to make a simplified version of siderostat to test the LVM telescope control system in Korea. The prototype siderostat consists of two aluminum flat mirrors, optomechanical housing structures made by aluminum profiles, and the Planewave L-350 mount. We designed the optical mirrors and the optomechanical structure of the siderostat. From structural analysis at various pointing cases, we estimated the tilt misalignments of mirrors within 4 arcsec, which would affect the telescope pointing errors.
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