Cone Nebula Region

Cone Nebula
All Images Copyright Steve Cannistra

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RA (J2000): 06h 40m 11s
Dec (J2000): +10 degrees 00' 32"
Position Angle: 51 degrees

The Cone Nebula is the conical emission nebula in the lower left corner of the field.  To the right of the Cone region is NGC 2264 a bright star cluster embedded in the characteristic blue light of a reflection nebula.  NGC 2264 is active star forming area that is part of a larger nebula complex within the Monoceros Loop.  The brightest star within the NGC 2264 group is an O7 class star called S. Monocerotis, which is emitting high energy UV irradiation that shapes the surrounding gas and creates fantastic structures such as the Cone Nebula itself.  Nascent stars incubating deep within the tip of the Cone Nebula will slowly emerge millions of years from now, after the dusty shroud of the Cone has been completely blown away by S. Monocerotis. 

Photographic Details:
Dates:  December 12, 18, 19, and 20, 2022.
Scope:  Takahashi FSQ106 at f5 on the Takahashi NJP Mount.
Autoguider:  ASI178 autoguider with SvBony 30mm guidescope, focal length 120mm.
Camera:  ZWO ASI294MM at -10C, with 7 position ZWO filter wheel.  Pixel size is 2.3 microns (Bin 1x1), yielding an image scale with the FSQ (530mm focal length) of 0.90 "/pixel (well matched for my seeing of  3 arcseconds).  Camera gain set to 50 (e-gain 2.13 electrons/ADU), offset 25. Read noise at this gain level was 2.18 electrons rms.
Baader Ha, R, G, B filters; 2 inch.
Image acquisition software:  MaximDL for camera control and autoguiding; CCD Commander for automation.
Exposures:  Total exposure 16 hours (Ha: 8 hours, 300 second subs; RGB 8 hours, 120 second subs).
Processing:  Calibrated in Maxim; aligned and stacked in Pixinsight; mild deconvolution and DDP stretch in CCDstack; all subsequent processing in Photoshop.

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