Object description:Sharpless 2-86 is an emission nebula located near the star Albireo in Cygnus. It is illuminated by the energy from the cluster of bright young blue stars, NGC 6823, in the center of the picture. Open star cluster NGC 6823 is 50 light years across and lies 6000 light years away. The age of the cluster is about two million years.
The huge pillars and dark globules of gas and dust pointing towards the open cluster in the centre are shaped by erosion from hot radiation emitted from the brightest cluster stars.
NGC 6820 is the small reflection nebula in the lower right of the picture.
Image Aquisition:This is a composite of Ha and R-G-B frames with a total integration time of 11,5 hours imaged on 5 different nights from my rooftop terrace in the Vienna city centre. Cameras used was ZWO ASI1600m mounted on a Takahashi Epsilon 130/430mm.
R-G-B: 483 x 16s (average of 10 and 30s frames; total 2,2h)
Ha: 562 x 60s (total 9,4h)
Total Exposure: 11,5h
Imaging dates:22/07/2017
29/07/2017
28/09/2017
16/08/2018
17/08/2018
See also close up with additional data:
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