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NGC6820 is an emission nebula in the constellation Vulpecula with a big, trunk-like dust pillar pointing towards the open cluster NGC6823.
This open cluster has a distance of aboout 6000 light years and contains very hot, active stars. The radiation of those stars forms the globules
and dust pillars that can be found throughout the complete emission nebula complex. Sometimes, the naming of this complex is a bit screwed up:
The emission nebula is NGC6820, the central open cluster is NGC6823. Some sites state, that NGC6820 is only a small reflection nebula in
the emission nebula complex. As the surface brightness of this nebula is quite low, a photographic approach to this faint object requires a very
high transmission of the sky, especially a very low mist or haze.
Datum/Date:
06.08.2015 & 07.08.2015 /August 6th and 7th, 2015
Optik / Scope:
7,5” Maksutov Newtonian Astrograph f/5.3 with 2” 1:10 Crayford focusser
Sensor/CCD:
QHY10 CCD-Camera (APS-C) @ -20°C, Gain=30, Offset=118
Autoguiding:
ALccd5 off-axis guiding
Belichtung/Exposure:
24x1500sec, total integration time= 10h 00min
Workflow:
Regim, PixInsight, Photoshop CS6
The Universe at a glance...
Juniper Hill Observatory
Köfering, Bavaria
12° 12’ E
48°56’ N
344m N.N.
NGC 6820 (Sh2-86)
