About image
NGC 2174 is an emission nebula located in the constellation Orion, associated with the open star cluster NGC 2175.
It is thought to be located about 6,400 light-years away from Earth.
This nebula is also called “Monkey Head Nebula”, but it is necessary a bit of fantasy to see this head in the nebula shape.
The image was obtained from my home terrace in severe conditions due to light pollution and sky “foggy” for high humidity, so long total integration was needed.
Technical data
Optic Tecnosky Apo refractor LT 130-910 with Riccardi reducer 0.75x (focal lenght 692mm, f/5.3)
Mount Skywatcher EQ8
Camera Atik 4000 with Starlight Xpress external filter wheel 5 positions
Filters Baader 50mm unmounted RGB
Guiding system Artesky Ultraguide 70mm
Exposure details R 7x300" bin1 -20C
G 7x300" bin1 -20C
B 7x300" bin1 -20C
Ha 28x900" bin1 -25C
OIII 19x900" bin1 -20C + 6x900" bin1 -25C
SII 25x900" bin1 -25C
Total integration 21h15'
Acquisition Voyager, PHD2
Processing Pixinsight 1.8,
Photoshop CS5, StarXTerminator, Topaz Denoise
SQM-L 18.2
Location Rescaldina (Italy), home terrace
Date 5/30 November, 6/12/13 December 2021