Sh2-71
Planetary Nebula in Aquila
About
A planetary nebula in Aquila with a lopsided ring and two lobes, about 3,300 light-years away. Minkowski found it in 1946, and which star created it is still argued: the bright variable one at the centre is too cool to ionize it alone.
Imaging tips
- Only about 2.5′ by 1.3′, so it needs a long focal length and a fine pixel scale.
- A planetary nebula is an emission object, so Hα and OIII suit it.
- Best in June and July; it reaches about 42° altitude from 50°N.
Facts
- Size
- 3′
- Magnitude
- —
- Coordinates
- RA 19h 2.0m, Dec +2° 9′
- Framing, APS-C
- longer than 4000 mm
- Framing, full frame
- longer than 4000 mm
- Best months
- Jun, Jul
- Peak altitude
- 42° from 50°N, 57° from 35°N