Latitude-Dependent Laser Deconfliction and Geosynchronous Satellite Closures (Cerro Pachón vs. Equator)
| dc.creator | Baranec, Christoph | |
| dc.date.accessioned | 2026-08-01T02:42:41Z | |
| dc.date.available | 2026-08-01T02:42:41Z | |
| dc.date.copyright | 2026 | |
| dc.date.issued | 2026-07-31 | |
| dc.description | A side-by-side two-panel animated video displaying polar coordinate sky maps (Azimuth 0°–360°, Elevation 40°–90°) for the Robo-AO-2 laser system evaluated at two virtual geographic locations: Cerro Pachón, Chile (left panel, blue shading) and the Equator (right panel, orange shading), using a 0.1° keep-out-cone half-angle. Regions permitted for laser propagation are colored, while prohibited zones are solid white. Over time, transient low-Earth orbit satellite closures move rapidly across both maps, while semi-static, persistent white closures remain situated in site-specific sky arcs: toward the North at Cerro Pachón (elevation ~55°) and extending along an East-West arc directly overhead near the zenith at the Equator. | |
| dc.description.abstract | This video demonstrates the effect of observatory latitude on laser-satellite deconfliction patterns using simulated Program Approval Messages (PAMs) for the Robo-AO-2 laser system located virtually at Cerro Pachón (30.2408° S) and the Equator (0.0001° N). The animation highlights semi-static closure zones caused by geosynchronous satellites (~36 Mm altitude), showing how their apparent celestial positions shift based on site latitude—appearing toward the North from southern latitudes, toward the South from northern latitudes (e.g., Maunakea), and directly overhead along the celestial equator. | |
| dc.format.extent | 400x900 pixels. Duration = 4m40s. | |
| dc.identifier.uri | https://hdl.handle.net/10125/113614 | |
| dc.language | eng | |
| dc.relation.ispartof | Analysis of Laser-Satellite Deconfliction for Astronomical Observatories | |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | en |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | |
| dc.title | Latitude-Dependent Laser Deconfliction and Geosynchronous Satellite Closures (Cerro Pachón vs. Equator) | |
| dcterms.type | MovingImage |