NGC 6823, Sh 2-86 and 6820
OPEN CLUSTER WITH NEBULOSITY IN
VULPECULA
(ra
19:43.1/ dec 23:18)
CLICK IN THE IMAGE FOR A
HIGH RESOLUTION VIEW
June 2013 - Camping La Porteña - San Antonio
de Areco,
Buenos Aires, Argentina
DATA
TYPE: Open Cluster
with Nebulosity
Apparent magnitude for
NGC 6823: 7.1
Apparent diameter for
NGC 6823 12 arc
minutes
Distance: 6.000
light years
IMAGE INFORMATION
SCOPE: 8" Orion Optics UK with Televue
Paracorr
CAMERA: QSI 583 WS
FILTERS:
Baader LRGB, 2" IDAS LPS for all channels
SKY CONDITIONS:
rural skies 35 % Moon
EXPOSURES:
LHaRGB (60,60,30,30,30)
OBJECT DESCRIPTION AND IMAGE SESSION
The open
Cluster NGC 6823 is surrounded by an emission nebula
complex known as Sh 2-86, in the northern constellation of Vulpecula. The
nebula exhibits a pillar of dust and gas on
the east side of the cluster, that might have got its
shape from the radiation originated from the young stars
in the area. The central open cluster NGC 6823 its only
2 million years old and extends over some 50 million
light years. With large aperture telescopes about fifty stars
can be seen, including the four central stars (magnitudes 9 to 11.5)
found near the core.
NGC 6820 is the small yellowish nebulosity located at the bottom
right of the image, often misidentified as Sh 2-86.
Although for
southern observers the object lies rather low, it can be photographed from
rural skies. NGC 6823 is almost 32º above the horizon at its highest, while
crossing the meridian in Buenos Aires' winter time.