WIYN means Wisconsin, Indiana University, Yale University, and NOAO National Optical Astronomy Observatories Observatory in Astronomy
Similar to WIYN
AAAD - Amateur Astronomers Association of DelhiAAAM - Active Amateur Astronomers of Maryland
AAS - American Astronautical Society
AAS - Archaeology, Astronautics, and Seti
AAT - Anglo Australian Telescope
AAVSO - American Association of Variable Star Observers
ABB - After the Big Bang
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