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SUMMARY:O16 - Celestial Sphere Project - Affordable and mass produced mode
 l of the celestial sphere
DTSTART;VALUE=DATE-TIME:20261123T081500Z
DTEND;VALUE=DATE-TIME:20261123T083000Z
DTSTAMP;VALUE=DATE-TIME:20261112T144219Z
UID:indico-contribution-837@indico.narit.or.th
DESCRIPTION:Speakers: Matipon Tangmatitham (National Astronomical Research
  Institute of Thailand (NARIT))\nThe concept of a Celestial Sphere is amon
 g the concepts in astronomy that many find least intuitive to understand. 
 This is an area where a handheld model can help immensely in visualizing t
 he concept. However\, a bad model can hinder a person's ability to underst
 and while a good model can be cost-prohibitive and the amount limitations 
 prevents it from being hands-on. In this work we attempt to address these 
 issues by developing a celestial sphere models that are affordable by usin
 g paper and beach ball as the media. A normal equirectangular map is trans
 formed using cassini map projection via a script run on graphics software 
 to preserve vector graphic editability. Different projections centered at 
 varying meridians called "gore" is created and together forms interrupted 
 map projection. A 6-gore interrupted map projection is printed on a transp
 arent polyvinyl surface with two azimuthal equidistance projection as the 
 cap to form a beach ball version. Additionally\, a 12-gore version is prin
 ted on paper with interlocking mechanism that allows an even more affordab
 le version to be printed anywhere. With additional base plate\, altitude a
 nd azimuth dials\, the paper version can be fully equipped to perform simp
 le instructions. These two versions offer powerful alternatives to teachin
 g about celestial sphere at the fraction of a cost.\n\nhttps://indico.nari
 t.or.th/event/238/contributions/837/
LOCATION:Dusit Thani Mactan Cebu Resort Ballroom III
URL:https://indico.narit.or.th/event/238/contributions/837/
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