WTTM means WIYN
Wisconsin, Indiana University, Yale University, and NOAO National Optical Astronomy Observatories Observatory Tip-Tilt Module in
Astronomy
Similar to WTTM
BS - Burrell Schmidt telescope
BST - British Summer Time [GMT + 0100]
CAAA - Capital Area Astronomy Association
CAI - Calcium Aluminum-rich Inclusion
CAL - Casual Astronomy League
CALL - Collaborative Asteroid Lightcurve Link
CCF - Cosmogenic Correlation Factor
View all in Astronomy