Ground-based: NOAO
M22; NGC 6656
2.6 kpc (8,500 light-years)
The entire globular cluster is roughly 24 arcminutes across.
Principal Astronomers: K. Sahu, S. Casertano, M. Livio, R.Gilliland (STScI), N. Panagia (ESA/STScI), M. Albrow and M. Potter (STScI)
F555W (V) and F814W (I)
N.A.Sharp, REU program/AURA/NOAO/NSF
