Developing the ngVLA Radio Telescope 6m antenna

Dean Chalmers; Gordon Lacy; Mohammad Islam; Nathan Loewen; Emile Van Vuuren; Lynn Baker

doi:10.1117/12.2562977

13 December 2020 Developing the ngVLA Radio Telescope 6m antenna

Dean Chalmers, Gordon Lacy, Mohammad Islam, Nathan Loewen, Emile Van Vuuren, Lynn Baker

Proceedings Volume 11445, Ground-based and Airborne Telescopes VIII; 114450M (2020) https://doi.org/10.1117/12.2562977
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The Next Generation Very Large Array (ngVLA) project to replace the VLA telescope in New Mexico continues to move forward. Concept designs for 15m, 18m, and 6m offset Gregorian antennas based on the Single-piece Rim-supported Composite (SRC) reflector concept have been developed at NRC, the 18m and 6m designs became part of the ngVLA System Reference Design (SRD). The Reference Design array is composed of a main array of 244 x 18m antennas and a short baseline array of 19 x 6m antennas. In the initial design iteration of the 6m antenna, as used in the SRD, was essentially a scaled down version 18m. This design exercise provided a costed concept appropriate for the SRD but did not meet one critical requirement; the ability to close pack the antennas. Following the release of the SRD the team at NRC took a clean piece of paper approach to the 6m antenna design driven by the close packing requirement. This paper will presents the design path from the ngVLA SRD to the latest design.

Conference Presentation

Citation Download Citation

Dean Chalmers, Gordon Lacy, Mohammad Islam, Nathan Loewen, Emile Van Vuuren, and Lynn Baker "Developing the ngVLA Radio Telescope 6m antenna", Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 114450M (13 December 2020); https://doi.org/10.1117/12.2562977

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