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Friday, March 5, 2010

NGC 2175 and Sh2-252, the "Monkey head nebula"




Nebula in natural color, composed from two narrowband channel, O-III & H-alpha.

There was some clear skys last night, so I was able to start a new project. this time my target is an open cluster, NGC 2175, it's surraunded by an emission nebula Sh2-252, it's sometimes called as a "Monkey head nebula".
NGC 2175 locates in constellation Orion. In my northern location, 65N, this target is not very high, about 40 degrees in maximum elevation. Distance from Oulu is about 6350 light years.
My original target was M1, the Crab Nebula but due the poor seeing i pick this secondary target. M1 needs a good seeing to be imaged well.

The nick name "Monkey head" is well deserved!

Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.

Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 3Hz
Image Scale, 0,75 arcseconds/pixel
Exposures H-alpha 7x1200s, binned 1x1
O-III 2x1200s binned 4x4
I'll shoot the S-II channel later, when ever weather let me do so, for this target.

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