An observation planning algorithm applied to multi-objective astronomical observations and its simulation in COSMOS field

Yi Jin; Yonggang Gu; Chao Zhai

doi:10.1117/12.925904

13 September 2012 An observation planning algorithm applied to multi-objective astronomical observations and its simulation in COSMOS field

Yi Jin, Yonggang Gu, Chao Zhai

Author Affiliations +

Proceedings Volume 8448, Observatory Operations: Strategies, Processes, and Systems IV; 84481W (2012) https://doi.org/10.1117/12.925904
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Multi-Object Fiber Spectroscopic sky surveys are now booming, such as LAMOST already built by China, BIGBOSS project put forward by the U.S. Lawrence Berkeley National Lab and GTC (Gran Telescopio Canarias) telescope developed by the United States, Mexico and Spain. They all use or will use this approach and each fiber can be moved within a certain area for one astrology target, so observation planning is particularly important for this Sky Surveys. One observation planning algorithm used in multi-objective astronomical observations is developed. It can avoid the collision and interference between the fiber positioning units in the focal plane during the observation in one field of view, and the interested objects can be ovserved in a limited round with the maximize efficiency. Also, the observation simulation can be made for wide field of view through multi-FOV observation. After the observation planning is built ,the simulation is made in COSMOS field using GTC telescope. Interested galaxies, stars and high-redshift LBG galaxies are selected after the removal of the mask area, which may be bright stars. Then 9 FOV simulation is completed and observation efficiency and fiber utilization ratio for every round are given. Otherwise,allocating a certain number of fibers for background sky, giving different weights for different objects and how to move the FOV to improve the overall observation efficiency are discussed.

Citation Download Citation

Yi Jin, Yonggang Gu, and Chao Zhai "An observation planning algorithm applied to multi-objective astronomical observations and its simulation in COSMOS field", Proc. SPIE 8448, Observatory Operations: Strategies, Processes, and Systems IV, 84481W (13 September 2012); https://doi.org/10.1117/12.925904

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KEYWORDS

Stars

Galactic astronomy

Astronomy

Computer simulations

Optical fibers

Astronomical imaging

Target acquisition

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