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Messier 27
| Name: |
Messier 27 |
| Nickname: |
Dumbell Nebula |
| Object Type: |
Planetary Nebula |
| Constellation: |
Vulpecula |
| Magnitude: |
7.09 |
| Object Size: |
8 x 5.7 arcmin |
| Comment: |
1400 ly distant |
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| Date Taken: |
2020/06/18 |
| Camera |
ZWO ASI071 (?? arc-sec/pixel) |
| Exposure: |
22 min |
| Telescope (Optics): |
AstroPhysics 155mm (6.1") EDF f/7 |
| Focal Length (FL): |
1085mm |
| Field of View(FOV): |
TBD |
| Mount: |
MI-250 Mount, ZWO ASI290 Off Axis Guider |
| Quick Notes: |
SharpCap and Photoshop. Taken over 2 nights |
| Location: |
Chiefland Astronomy Village, Florida |
| More information: |
Digging Deeper |
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Object Information:
Messier 27 (a Planetary Nebula)
This object was the first planetary nebula to be discovered; by Charles Messier in 1764.
Like many nearby planetary nebulae, the Dumbbell contains knots. Its central region is marked by a pattern of dark and bright cusped knots with dark tails.
The central star is a white dwarf progenitor of the nebula.
In 1970, the expansion velocity ws measured at 31 km/s. Given its semi-minor axis radius of 1.01 ly, this implies the age is 9,800 years.
The 1992 measured rate of expansion is under 2.3" per century, so the estimated upper age limit is 14,600 yr.
It lies above the small constellation of Sagitta.
Skies prevented getting this in one evening. My first multi-night register and stack.
Technical Depths:
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