FEB 1, 2004
M2-9: Wings of a Butterfly Nebula
JUN 12, 2005
M2-9: Wings of a Butterfly Nebula
JUN 18, 2007
Monitoring M2-9
SEP 15, 2013
M2-9: Wings of a Butterfly Nebula
JUL 24, 2016
M2-9: Wings of a Butterfly Nebula
SEP 13, 2020
M2-9: Wings of a Butterfly Nebula
APR 16, 2023
M2-9: Wings of a Butterfly Nebula