Blinking Planetary

Quick Reference

The planetary nebula NGC 6826 in Cygnus. It is an 8th-magnitude nebula with a 10th-magnitude central star. Alternately looking at the central star and then away causes the star and nebula to appear to blink on and off. It is about 3200 l.y. away.

Subjects: Astronomy and Astrophysics.

Reference entries