Deep Sky Object in Winter
Around Sh2-216, Sh2-221 (Planetary Nebula & Supernova remnant in Auriga)
Click on image to enlarge
| Date & Time: | Oct 29 2022, from 24:47 to 25:29 JST(+0900) |
| Composed 8 shots with 6 minutes exposed |
| Optical: | AF zoom-Nikkor 80-200mmF2.8ED (f=135mm, 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 Sh2-216, 221
Italic indicates ID of open clusters
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This image has captured dimmed nebulosities in northwest edge of Auriga, positioned at 2 to 5 degrees west of Capella.
You can swith between color and monochrome emphasized images by clicking on a button at upper right-hand side of this page.
In right (west) of the image, you can see Sh2-216 with a diameter of about 3 degrees.
The nebula has been considered one of closest and ancient planetary nebulae.
Actually Sh2-216 has about round shape, but the western part is extraordinary dimmed so this image shows you only eastern part as an arc-like shape.
And in opposite left side a supernova remnant of Sh2-221 has been distributed in span of about 4 degrees. You can recognize the filament-like structures mistily.
In north of Sh2-221, two tiny emission nebulae can be seen.
Sh2-217 has a size of about 7 arc minutes, and another one of Sh2-219 just 20 arc minutes southwest of Sh2-217 has a round shape with a diameter of 2 arc minutes.
These nebulae are lying over 10 thousand light years away, have no relations with Sh2-216 and Sh2-221.
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| Sh2-216 / Planetary Nebula, type 4 E |
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| R.A. | 04h 45m 30s (2000.0) |
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| Dec. | +46° 50' 00" (2000.0) |
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| Apparent Size | 180' |
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| Real Size | 20 light yrs. |
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| Magnitude | - |
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| Distance | 390 light yrs. |
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| Other IDs | LBN 744 |
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| Sh2-221 / Supernova Remnant, type 6 E |
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| R.A. | 04h 54m 48.0s (2000.0) |
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| Dec. | +46° 41' 00" (2000.0) |
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| Apparent Size | 240' |
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| Real Size | 180 light yrs. |
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| Magnitude | - |
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| Distance | 2600 light yrs. |
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| Other IDs | LBN 754 |
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| Sh2-217 / Diffused Nebula, type 3 E |
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| R.A. | 04h 58m 42.0s (2000.0) |
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| Dec. | +47° 59' 49" (2000.0) |
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| Apparent Size | 7.3×6.3' |
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| Real Size | 44 light yrs. |
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| Magnitude | - |
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| Distance | 17000 light yrs. |
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| Other ID | LBN 745 |
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| Sh2-219 / Diffused Nebula, type 3 E |
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| R.A. | 04h 56m 11.7s (2000.0) |
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| Dec. | +47° 23' 37" (2000.0) |
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| Apparent Size | 2.0' |
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| Real Size | 12 light yrs. |
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| Magnitude | - |
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| Distance | 14000 light yrs. |
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| Other ID | LBN 747 |
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