An 8th-magnitude planetary nebula in Vulpecula, also known as M27 and NGC 6853. It is the most prominent planetary nebula for small telescopes. The Dumbbell Nebula is so named because of its double-lobed appearance, like an hourglass, in large apertures or on photographs. The Dumbbell lies about 1400 l.y. away.
http://www.eso.org/public/images/eso9846a/
- base level
- base level((of a pulse))
- Basel II
- base limiter
- base-limit register
- baseline
- baseline risk
- Basel problem
- basement
- basement membrane
- base metal
- base money
- base(of an exponential function)
- base(of an isosceles triangle)
- base(of a pyramid)
- base(of a triangle)
- base(of logarithms)
- base(of natural logarithms)
- base pairing
- base period
- base rate
- base region
- base register
- base saturation
- base station