Deep Sky Object in Winter
Around Sh2-216, Sh2-221 (Planetary Nebula & Supernova remnant in Auriga)
|Date & Time: ||Jan 4 2016, from 19:58 to 21:29 JST(+0900)
|Mosaic of 3 flames of 6min.×5shots|
|Optical: ||TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
|with IDAS LPS-V4 Light-pollution suppression filter|
|Auto-guided with TAKAHASHI JP Equatorial & SBIG STV
|Digital Camera: ||Canon EOS 6D (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)|
|Device Size...35×24mm, Sensitivity...ISO3200|
This image has captured dimmed nebulosities in northwest edge of Auriga, positioned at 2 to 5 degrees west of Capella. |
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.
|Sh2-216 / Planetary Nebula, type 4 E|
|R.A.||04h 45m 30s (2000.0)|
|Dec.||+46° 50' 00" (2000.0)|
|Real Size||20 light yrs.|
|Distance||390 light yrs.|
|Other IDs||LBN 744||
|Sh2-221 / Supernova Remnant, type 6 E|
|R.A.||04h 54m 48.0s (2000.0)|
|Dec.||+46° 41' 00" (2000.0)|
|Other IDs||LBN 754||
|Sh2-217 / Diffused Nebula, type 3 E|
|R.A.||04h 58m 42.0s (2000.0)|
|Dec.||+47° 59' 49" (2000.0)|
|Real Size||44 light yrs.|
|Distance||17000 light yrs.|
|Other ID||LBN 745||
|Sh2-219 / Diffused Nebula, type 3 E|
|R.A.||04h 56m 11.7s (2000.0)|
|Dec.||+47° 23' 37" (2000.0)|
|Real Size||12 light yrs.|
|Distance||14000 light yrs.|
|Other ID||LBN 747|