B352
Dark Nebula in Cygnus
About
A large dark cloud in Cygnus, lying just north of the main hydrogen-glowing part of the North America Nebula (NGC 7000). One write-up expects it to be nearer than that nebula.
Imaging tips
- One source gives about 20′ along its long axis, with the edge of the North America Nebula close by.
- As a dark nebula it needs broadband: the cloud shows as a dark shape against the star field and the glow behind it.
- One imager shot 99 three-minute luminance subs plus about 120 minutes of Hα, but left the Hα out of the final LRGB image because the blend looked poor.
- Best in July and August, when it passes nearly overhead, peaking near 86° from 50°N.
Facts
- Size
- 15′ × 8′
- Magnitude
- —
- Coordinates
- RA 20h 57.2m, Dec +45° 53′
- Framing, APS-C
- 1620–2690 mm
- Framing, full frame
- 2480–4130 mm
- Best months
- Jul, Aug
- Peak altitude
- 86° from 50°N, 79° from 35°N