| Sh2-252 (also known as Monkey Head Nebula) is an HII emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth. The nebula may have formed through hierarchical collapse. NGC 2175 (also known as OCL 476 or Cr 84) is the open cluster embedded in a diffusion nebula. It was discovered by Giovanni Batista Hodierna before 1654 and independently discovered by Karl Christian Bruhns in 1857. There is some equivocation in the use of the identifiers NGC 2174 and NGC 2175. These may apply to the entire nebula, to its brightest knot, or to the star cluster it includes. [Wiki] |
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| Optic |
SW Quattro 8S 200mm f/4 with Baader MPCC Mark III corrector |
| Camera |
Atik 383L+ |
| Filters |
Baader Ha, SII, OIII 36mm |
| Mount |
NEQ6 with EQASCOM
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Guide
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SW 70/500 with AlCCD5
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Frame center
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RA 06:09:45 DEC 20:34:14 J2000
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Date
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Feb and Nov 2020
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Site
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Astrobioparco di Felizzano, AL, Italy
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| Exposures
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Ha - 12x900 @-10C bin 1x1
SII - 15x600 bin 2x2
OIII - 15x600 bin 2x2
Integration time - 8h10m
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