Deep Sky Object in Winter
NGC2264 & Cone Nebula (Open Cluster in Monoceros)
Click on image to enlarge
| Date & Time: | Oct 12 2024, from 26:22 to 27:19 JST(+0900) |
| Composed 8 shots with 8 minutes exposed |
| Optical: | TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3) |
| with LPS-D1 Light-pollution suppression filter |
| Auto-guided with TAKAHASHI JP Equatorial & SBIG STV |
| CMOS Camera: | ZWO ASI2600MC Pro (Cooled temp.: -15°C) |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording format...16bit FITS, converted to 16bit TIFF(6248×4176) |
| Device Size...23.5×15.7mm, Gain...100 |
| NGC2264 / Diffused Nebula & Open Cluster, type 1 E |
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| R.A. | 06h 41m 6.0s (2000.0) |
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| Dec. | +09° 53' 00" (2000.0) |
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| Apparent Size | 60' |
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| Real Size | 45 light yrs. |
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| Magnitude | 3.9 |
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| Distance | 2600 light yrs. |
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| Other IDs | Sh2-273, LBN911 |
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This picture shows you a very distributed open cluster and surrounding nebulosities about 6 degrees north of the Rosette Nebula in Monoceros.
A bright bluish star in upper part is a variable of S Mon, changing from 4.2 to 4.6 in magnitude.
The cluster of NGC2264 is formed from fine stars lying south of S Mon.
You can see a bluish reflection nebula just southwest of the variable, and a very very dimmed reddish diffused nebula in the southward.
The diffused nebula has a dark cut in southern region; this characteristic structure has given the nebula a nickname of "The Cone Nebula" or "The Christmas Tree", etc.
Furthermore, a very gigantic star field including this picture is occupied by pale and reddish nebulosities.
The hydrogen gaseous region has a number of NGC2264, same as the open cluster in this image.
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Click on image to enlarge
| Date & Time: | Nov 28 2021, from 23:16 to 24:22 JST(+0900) |
| Composed 12 shots with 6 minutes exposed |
| Optical: | Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3) |
| with BaaderPlanetarium Moon&Skyglow filter |
| Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN |
| Digital Camera: | Nikon D810A |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2040×2040) |
| Device Size...10×10mm |
| Sensitivity...ISO4000, White Balance...Daylight |
This picture shows you a close-up around the Cone Nebula.
A triangle-shaped dark lane has obscured a background emission nebula, looks like that the dark lane is dividing the emission nebula.
A part of dark lane also has complicated structures, contains plural embryo stars.
