WTTM means WIYN
Wisconsin, Indiana University, Yale University, and NOAO National Optical Astronomy Observatories Observatory Tip-Tilt Module in
Astronomy
Similar to WTTM
AD - Astronomsko Drustvo
ADAF - Advection-Dominated Accretion Flow
ADAS - Asiago DLR Asteroid Survey
ADIL - Astronomy Digital Image Library
ADS - Astrophysics Data System
ADU - Astronomical Distance Unit
AEA - Atomic Energy Agency
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