NGC 2174 (also known as Monkey Head Nebula) is an H II[1] emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175.[1] It is thought to be located about 6,400 light-years away from Earth.
Instruments and exposure data:
W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters: Ha 5nm Astrodon_RGB Baader Planetarium
Sky-Watcher EQ6 Pro
Tricolor Emmision Line image
S[II] 8nm(Red)_Ha 5nm(Green)_O[III] 3nm(Blue)
Modified Hubble Palette
S[II] 4*10min+5Ha 5*10min_Ha 14*10min_ O[III] 23*10min
total exposure time : 1080min (18h)
L(S[II]+Ha+O[III])_Red(S[II]+Ha)_Green(Ha)_Blue(O[III])
Ha:14*10min bin1x1
S[II]:4*10min bin1x1
O[III]:23*10min bin1x1
Total exposure time:6h50min
Astrobin Image of the Day 24 Apr 2014