IC 289
Encyclopedia
IC 289 is a planetary nebula
in the constellation Cassiopeia
which looks pretty and small with aperture instruments. This nebula was discovered by Lewis Swift in early September of 1888. It can be easily recognized because it just lies down to the 10 magnitude star BD + 60 0631. N.J. Martin described IC 289 as, “A nice, faint round planet like planetary nebula
. The uniform oval disc shows some irregularity in brightness but is not obviously brighter at the edge.”
Planetary nebula
A planetary nebula is an emission nebula consisting of an expanding glowing shell of ionized gas ejected during the asymptotic giant branch phase of certain types of stars late in their life...
in the constellation Cassiopeia
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopea was one of the 48 constellations listed by the 2nd century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today...
which looks pretty and small with aperture instruments. This nebula was discovered by Lewis Swift in early September of 1888. It can be easily recognized because it just lies down to the 10 magnitude star BD + 60 0631. N.J. Martin described IC 289 as, “A nice, faint round planet like planetary nebula
Planetary nebula
A planetary nebula is an emission nebula consisting of an expanding glowing shell of ionized gas ejected during the asymptotic giant branch phase of certain types of stars late in their life...
. The uniform oval disc shows some irregularity in brightness but is not obviously brighter at the edge.”
External links
- http://observing.skyhound.com/archives/oct/NGC_289.html
- http://www.noao.edu/outreach/aop/observers/ic289.html