Astronomy Abbreviations and Acronyms
- ITAInstituse of Theoretical Astronomy
- ITAInstitute of Theoretical Astrophysics
- ITAInstitute of Theoretical Astronomy
- ITAMSATItalian Amateur Satellite
- ITFInfrared Telescope Facility
- ITFIntensity Transfer Function
- ITRSInternational Terrestrialgreference System
- ITS-90International Temperature Scale of 1990
- ITS-PIntegrated Truss Structure - Pozt
- ITS-SIntegrated Truss Structure - Starboard
- ITS-ZIntegrated Truss Structure - Zenith
- ITSOInternational Telescopes Support Office
- ITTInternational Telephone and Telegraph Corporation
- ITTCInternational Telephone and Telegraph Corporation
- ITUInfrared Telescope Unit
- ITVInternationales Teleskoptreffen Vogelsberg
- IUInterface Unit
- IUCAAInter-University Centre for Astronomy and Astrophysics
- IUEInternational Ultraviolet Explorer
- IUEDACIue Data Analysis Center
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