Telescope control software and proto-model siderostat for the SDSS-V Local Volume Mapper
Hojae Ahn (1), Florian Briegel (2), Jimin Han (1), Mingyu Jeon (1),, Thomas M. Herbst (2), Sumin Lee (1), Woojin Park (3), Sunwoo Lee (1), Inhwan, Jung (4), Tae-Geun Ji (1), Changgon Kim (1), Geon Hee Kim (5), Wolfgang, Gaessler (2), Markus Kuhlberg (2), Hyun Chul Park (6)

TL;DR
This paper presents the development and testing of a specialized telescope control software and a proto-model siderostat for the SDSS-V Local Volume Mapper, demonstrating high-precision field acquisition and guiding in a wide-field survey setup.
Contribution
The paper introduces a hierarchical control software for multiple telescope components and a lightweight proto-model siderostat, advancing automation and precision in wide-field astronomical surveys.
Findings
Achieved field acquisition accuracy of 0.38 arcseconds.
Achieved autoguide accuracy of 1.5 arcseconds.
Successfully tested the proto-model in real sky conditions.
Abstract
The fifth Sloan Digital Sky Survey (SDSS-V) Local Volume Mapper (LVM) is a wide-field integral field unit (IFU) survey that uses an array of four 160 mm fixed telescopes with siderostats to minimize the number of moving parts. Individual telescope observes the science field or calibration field independently and is synchronized with the science exposure. We developed the LVM Acquisition and Guiding Package (LVMAGP) optimized telescope control software program for LVM observations, which can simultaneously control four focusers, three K-mirrors, one fiber selector, four mounts (siderostats), and seven guide cameras. This software is built on a hierarchical architecture and the SDSS framework and provides three key sequences: autofocus, field acquisition, and autoguide. We designed and fabricated a proto-model siderostat to test the telescope pointing model and LVMAGP software. The…
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Taxonomy
TopicsAstronomical Observations and Instrumentation · Astronomy and Astrophysical Research · Adaptive optics and wavefront sensing
