Deep Sky Object in Winter
Around Sh2-284 to Sh2-287
(Diffused Nebulae & Supernova remnant in Monoceros)
Click on image to enlarge
| Date & Time: | Oct 29 2022, from 27:39 to 28:33 JST(+0900) |
| Composed 10 shots with 6 minutes exposed |
| Optical: | AF zoom-Nikkor 80-200mmF2.8ED (f=80mm, stop: F4.0) |
| with IDAS LPS-D1 Light-pollution suppression filter |
| Auto-guided with TAKAHASHI EM-200 Equatorial |
| CMOS Camera: | ZWO ASI2600MC Pro (Cooled temp.: -15°C) |
| Location: | Furudono town, Fukushima pref. |
| Camera Settings: | Recording format...16bit FITS, converted to 16bit TIFF(6248×4176) |
| Device Size...23.5×15.7mm, Gain...100 |
Objects around Sh2-284 to 287
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This is a wide-area image of 16.5×11° around the winter Milky Way flowing in the southern part of the constellation Monoceros.
Three bright Hα nebulae, Sh2-280, 282 & 284, located just south of the Rosette Nebula, are visible in the upper part of the image.
A magnified image of these three nebulae can be browsed in previous page.
Just southeast of Sh2-284, you can see a faint red circular nebula with a span of over 2 degrees.
This is a supernova remnant SNR G213.0-0.6 discovered by radio observation.
It is located 7800 light-years away and has an actual diameter of 350 light-years, and is considered to be one of the largest supernova remnants in the Milky Way.
Although it can be caught on modern digital images, it is not registered in the major catalogs of diffuse nebulae.
A large Hα nebula Sh2-287 is also floating about 4 degrees further southeast.
The size in the catalog is 12 arc minutes, but in this image you can see that the size is more than 2 degrees.
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| Sh2-280 / Diffused Nebula, type 4 E |
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| R.A. | 06h 38m 00.0s (2000.0) |
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| Dec. | -02° 00' 00" (2000.0) |
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| Apparent Size | 40' |
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| Real Size | 65 light yrs. |
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| Magnitude | - |
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| Distance | 5540 light yrs. |
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| Other IDs | LBN970 |
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| Sh2-282 / Diffused Nebula, type 3 E |
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| R.A. | 06h 38m 00s (2000.0) |
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| Dec. | +01° 30' 00" (2000.0) |
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| Apparent Size | 30×10' |
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| Real Size | 50 light yrs. |
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| Magnitude | - |
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| Distance | 4890 light yrs. |
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| Other IDs | LBN978 |
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| Sh2-284 / Diffused Nebula, type 6 E |
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| R.A. | 06h 45m 41.8s (2000.0) |
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| Dec. | +00° 12' 06" (2000.0) |
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| Apparent Size | about 20' |
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| Real Size | 400 light yrs. |
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| Magnitude | - |
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| Distance | 16900 light yrs. |
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| G213.0-0.6 / Supernova Remnant |
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| R.A. | 06h 50m 45.0s (2000.0) |
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| Dec. | -00°22' 35" (2000.0) |
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| Apparent Size | 160' |
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| Real Size | 350 light yrs. |
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| Magnitude | - |
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| Distance | 7800 light yrs. |
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| Sh2-287 / Diffused Nebula, type 5 E |
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| R.A. | 06h 59m 32.6s (2000.0) |
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| Dec. | -04°48' 14" (2000.0) |
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| Apparent Size | 12' |
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| Real Size | N/A |
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| Magnitude | - |
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| Distance | 6800 light yrs. |
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| Other IDs | LBN 1012 |
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