vdB128
Reflection Nebula in Cygnus
About
A faint veil of reflection nebula in Cygnus surrounding the magnitude 5.6 blue supergiant HD 190603, whose strong wind built the nebula. Its distance is debated: older studies give about 3,590 light-years, more recent ones about 13,590.
Imaging tips
- About 5′ across, so it is too small to frame: use a long focal length and fine pixel scale.
- Described as a faint veil around its star, so expect a weak signal; broadband is the right filter choice.
- One imager used a 12-inch f/3.6 astrograph, 6 × 10 min luminance and 5 × 10 min each of red, green and blue, 3 h 30 min in total, binned 2×2.
- Best around July and August; it peaks near 72° altitude from 50°N.
Facts
- Size
- 5′
- Magnitude
- —
- Coordinates
- RA 20h 4.6m, Dec +32° 13′
- Framing, APS-C
- longer than 4000 mm
- Framing, full frame
- longer than 4000 mm
- Best months
- Jul, Aug
- Peak altitude
- 72° from 50°N, 87° from 35°N