LVMECP: SDSS-V Local Volume Mapper Enclosure Control Package

Mingyeong Yang; Felipe Besser; José Sánchez-Gallego; Gyoik Kim; Changgon Kim; Hojae Ahn; Tae-Geun Ji; Nicholas P. Konidaris; Guillermo A. Blanc; Erika Cook; Cynthia S. Froning; Solange Ramirez; Niv Drory; Juna A. Kollmeier

doi:10.1117/12.2627651

29 August 2022 LVMECP: SDSS-V Local Volume Mapper Enclosure Control Package

Mingyeong Yang, Felipe Besser, José Sánchez-Gallego, Gyoik Kim, Changgon Kim, Hojae Ahn, Tae-Geun Ji, Nicholas P. Konidaris, Guillermo A. Blanc, Erika Cook, Cynthia S. Froning, Solange Ramirez, Niv Drory, Juna A. Kollmeier

Author Affiliations +

Proceedings Volume 12189, Software and Cyberinfrastructure for Astronomy VII; 121892D (2022) https://doi.org/10.1117/12.2627651
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

We developed control software for an enclosure system of the SDSS-V Local Volume Mapper (LVM) which provides a contiguous 2,500 deg2 integral-field survey. The LVM enclosure, located at the Las Campanas Observatory in Chile, is a building that hosts the LVM instruments (LVM-I). The enclosure system consists of four main systems: 1) a roll-off dome, 2) building lights, 3) a Heating, Ventilation, and Air Conditioning (HVAC) system, and 4) a safety system. Two Programmable Logic Controllers (PLCs) as middleware software directly operate complex mechanisms of the dome and the HVAC via the Modbus protocol. The LVMECP is implemented by Python 3.9 following the SDSS software framework which adopted a protocol, called CLU, with message passing based on the RabbitMQ and Advanced Message Queuing Protocol (AMQP). Also, we applied asynchronous programming to our system to process multiple requests simultaneously. The Dome PLC system remotely sends commands for the operation of a roll-off dome and enclosure lights. The HVAC PLC system keeps track of changing environmental values of the HVAC system in real-time. This software provides observers with remote access by high-level commands.

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Mingyeong Yang, Felipe Besser, José Sánchez-Gallego, Gyoik Kim, Changgon Kim, Hojae Ahn, Tae-Geun Ji, Nicholas P. Konidaris, Guillermo A. Blanc, Erika Cook, Cynthia S. Froning, Solange Ramirez, Niv Drory, and Juna A. Kollmeier "LVMECP: SDSS-V Local Volume Mapper Enclosure Control Package", Proc. SPIE 12189, Software and Cyberinfrastructure for Astronomy VII, 121892D (29 August 2022); https://doi.org/10.1117/12.2627651

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