This is an image of SH2-155, also known as the Cave Nebula. It is a complex nebula containing emission, reflection and dark nebulae, about 2,400 light years away in the constellation Cepheus
September 21 - October 8, 2013
Location: Rancho Hidalgo, NM
Telescope: TEC-140 (F7)
Camera: SBIG ST-8300M
Mount: AP900 GTO
HA: 18x30 minutes (binned 1x1)
SII: 18x30 minutes (binned 1x1)
OIII: 18x30 minutes (binned 1x1)