Sh2-106
HII Region in Cygnus
About
A small star-forming nebula in Cygnus, about 2,000 light-years away and roughly 2 light-years wide, nicknamed the Celestial Snow Angel. A young star of about 15 solar masses at its centre blows jets from its poles, giving the nebula its two-lobed shape.
Imaging tips
- Only about 3′ across, so it is too small to frame: use a long focal length and a fine pixel scale.
- One imager worked at 3,931 mm and 0.4″ per pixel, totalling 24 hours 45 minutes of Hα, OIII, SII and RGB in 5-minute subs.
- That imager noted the target is small and sits near brighter objects such as the Crescent Nebula, which makes it less popular.
- The narrowband data in that image was used for both a Hubble-palette version and a natural-colour version.
- Best in July and August; it peaks near 77° altitude from 50°N.
Facts
- Size
- 3′
- Magnitude
- —
- Coordinates
- RA 20h 27.4m, Dec +37° 23′
- Framing, APS-C
- longer than 4000 mm
- Framing, full frame
- longer than 4000 mm
- Best months
- Jul, Aug
- Peak altitude
- 77° from 50°N, 88° from 35°N