NGC 2174/2175 - The Monkey Head Nebula in Orion


Copyright 2007 Hap Griffin

Known informally as the "Monkey Head Nebula", NGC 2174 is a mixture of emission and reflection nebulae in Orion.  The loose star cluster at its center is known as NGC 2175 and the nebula surrounding it has the designation NGC 2174.  However, some references also show the nebula to be NGC 2175.


NGC 2174/2175 lies at a distance of 850 light years.


Date/Location:    December 5, 2007     Griffin/Hunter II Observatory    Bethune, SC
Instrument:    Canon 40D (modified IR filtering) Digital SLR through 10" Newtonian w/MPCC 
Focal Ratio:   f/ 4.7
Guiding:    SBIG ST-237 through Orion ED80
Conditions:    Cold and clear
Weather:    45 F
Exposure: 200 minutes total (50 x 5 minutes @ ISO 800)
Filters:    Baader UV/IR block internal to camera
Processing:    Focused and captured,  RAW to TIFF conversion, flat frame calibration, Digital Development, resizing and JPEG conversion in ImagesPlus.  Color correction in Photoshop CS2.  Noise reduction in Neat Image.