Cone Nebula Region
RA (J2000): 06h 40m 11s
Dec (J2000): +10 degrees 00' 32"
Position Angle: 51 degrees
The Cone Nebula is the conical
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
The brightest star within the NGC 2264 group is an O7 class star called
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.
Dates: December 12, 18, 19, and 20,
FSQ106 at f5 on the Takahashi NJP
Autoguider: ASI178 autoguider with SvBony 30mm guidescope, focal length
Camera: ZWO ASI294MM at -10C,
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.
Ha, R, G, B filters; 2 inch.
software: MaximDL for camera control and autoguiding; CCD
Commander for automation.
exposure 16 hours (Ha: 8 hours, 300 second subs; RGB 8 hours, 120
Calibrated in Maxim; aligned and
stacked in Pixinsight; mild deconvolution and DDP stretch in CCDstack;
all subsequent processing in Photoshop.
note: Graphics on this website may not be reproduced without
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