WIYN means Wisconsin, Indiana University, Yale University, and NOAO
National Optical Astronomy Observatories Observatory in
Astronomy
Similar to WIYN
AAT - Anglo Australian Telescope
AAVSO - American Association of Variable Star Observers
ABB - After the Big Bang
ABBA - ADC Backend For Bolometer Array
ABF - Astronomische Beeldverwerkings Faciliteiten
AC - Ascendant Cusp
AC - Active Coronae
View all in Astronomy