Paper 13094-164
Paper 13094-164
Realizing the potential of the Dragonfly Spectral Line Mapper: Calibration methods and on sky performance
On demand | Presented live 18 June 2024 
Abstract
The Dragonfly Spectral Line Mapper is an innovative all-refracting telescope designed to carry out ultra-low surface brightness wide-field mapping of visible wavelength line emission. Equipped with ultranarrowband filters mounted in Dragonfly Filter-Tilter instrumentation, the Dragonfly Spectral Line Mapper can detect H-alpha, [NII], and [OIII] line emission produced by structures with sizes ranging from ~1 to 1000kpc in the local Universe. These spatial scales encompass that of the exceedingly diffuse and faintly radiating circumgalactic medium, which is singularly difficult to detect with conventional mirror-based telescope instrumentation. Here we describe our calibration and observing methods which enable the Dragonfly Spectral Line Mapper to reach the unprecedented sensitivity required to image the circumgalactic medium of galaxies in the local Universe.
Presenter
NRC-Herzberg Astronomy & Astrophysics (Canada)
Dr. Deborah Lokhorst received her PhD in Astronomy & Astrophysics in 2022 from the University of Toronto, which she carried out under the supervision of Prof. Roberto Abraham. She is now a Herzberg Instrument Science Fellow at NRC Herzberg Astronomy & Astrophysics Research Centre and is the project manager, systems engineer, and project scientist for the Dragonfly Spectral Line Mapper. Dr. Lokhorst is experienced in computational theoretical work, the collection and analysis of observational data, and opto-mechanical engineering design and construction.
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