WTTM means WIYN
Wisconsin, Indiana University, Yale University, and NOAO National Optical Astronomy Observatories Observatory Tip-Tilt Module in
Astronomy
Similar to WTTM
BLO - Bl Lac Object
BLOB - Binary Large Object
BM - Blue Moon
BMO - Black Moving Object
BOOK - Bio Optical Organized Knowledge
BOSS - Bullet Of Super Speed
BS - Burrell Schmidt telescope
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