| Hydrogen-α, Sulfur II & Oxygen III |
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Object: NGC2264
& Sh2-273 |
The Cone Nebula - Emission Nebula |
Const.: Monoceros |
| Camera: SXV-H9 |
Scope: Tele Vue NP101 with a 0.8x FR |
Mount: Losmandy Titan |
| Filter(s): Hα:Hα/SII:OIII:OIII |
Exposure: 9x8m:9x8m/5x8m:10x8m:10x8m |
TeleVue 0.8x Focal Reducer |
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NGC2264 and Sh2-273, the Christmas Tree Cluster and the Cone Nebula in Monoceros.
The region to the right of the bright star above the center is known as the Fox Fur Nebula,
while the open cluster in the center is called the Christmas Tree Cluster.
This image is a composite, using a Hydrogen-alpha filtered image for the luminance channel,
the same Hα combined with a Sulfer II filtered image for the red channel,
and an Oxygen III filtered image for both the blue and green channels.
Since all the color seen in the nebula is the result of these three emission lines,
the color is reasonably accurate.
This technique allows color imaging to be performed in a light-polluted environment.
The exposures were acquired using an SXV-H9 CCD camera on a Tele Vue NP101 101mm f/5.4 refractor equipped with a 0.8x focal reducer.
The exposures were calibrated, defect-corrected, stacked and color-composited using AIP4WINV2.
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