NAOC Open IR
Adapting active reflector technology for greater sensitivity and sky-coverage in FAST-like telescopes
Li, Jian-Ling1,2,3; Peng, Bo1,2; Jin, Cheng-Jin1,2; Li, Hui1,2; Strom, Richard G.4,5; Liu, Bin1,2; Chai, Xiao-Ming1,2; Liu, Li-Jia1,2,3
2021-03-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume501Issue:4Pages:6210-6214
AbstractThe Five-hundred-meter Aperture Spherical radio Telescope (FAST), the largest single-dish radio telescope in the world, has implemented an innovative technology for its huge reflector, which changes the shape of the primary reflector from spherical to that of a paraboloid of 300-m aperture. Here, we explore how the current FAST sensitivity can potentially be further improved by increasing the illuminated area (i.e. the aperture of the paraboloid embedded in the spherical surface). Alternatively, the maximum zenith angle can be increased to give greater sky coverage by decreasing the illuminated aperture. Different parabolic apertures within the FAST capability are analyzed in terms of how far the spherical surface would have to move to approximate a paraboloid. The sensitivity of FAST can be improved by approximately 10 percent if the aperture of the paraboloid is increased from 300 to 315m. The parabolic aperture lies within the main spherical surface and does not extend beyond its edge. The maximum zenith angle can be increased to approximately 35o from , if we decrease the aperture of the paraboloid to 220m. This would still give a sensitivity similar to the Arecibo 305-m radio telescope. Radial deviations between paraboloids of different apertures and the spherical surfaces of differing radii are also investigated. Maximum zenith angles corresponding to different apertures of the paraboloid are further derived. A spherical surface with a different radius can provide a reference baseline for shape-changing applied through active reflector technology to FAST-like telescopes.
Keywordinstrumentation: adaptive optics methods: analytical methods: observational telescopes
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS
DOI10.1093/mnras/staa3973
Language英语
Funding ProjectNational Key R&D Program of China[2018YFA0404703] ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; NAOC ; CAS
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Open Project Program of the CAS Key Laboratory of FAST ; Open Project Program of the CAS Key Laboratory of FAST ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; NAOC ; NAOC ; CAS ; CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000637320000105
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78321
Collection中国科学院国家天文台
Corresponding AuthorLi, Jian-Ling; Peng, Bo; Liu, Bin
Affiliation1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, 20A Datun Rd, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
5.Radio Observ, ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands
Recommended Citation
GB/T 7714
Li, Jian-Ling,Peng, Bo,Jin, Cheng-Jin,et al. Adapting active reflector technology for greater sensitivity and sky-coverage in FAST-like telescopes[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,501(4):6210-6214.
APA Li, Jian-Ling.,Peng, Bo.,Jin, Cheng-Jin.,Li, Hui.,Strom, Richard G..,...&Liu, Li-Jia.(2021).Adapting active reflector technology for greater sensitivity and sky-coverage in FAST-like telescopes.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,501(4),6210-6214.
MLA Li, Jian-Ling,et al."Adapting active reflector technology for greater sensitivity and sky-coverage in FAST-like telescopes".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 501.4(2021):6210-6214.
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