( astrodoc.ca )
This gorgeous donut is the Rosette Nebula. It’s
very large and diffuse, and contains open cluster
which is smack dab in the middle of the Rosette.
It lies about 5,200 light years away in the
and is about 50 light years across. This gives it an
apparent width about three times that of the full
It has an estimated mass of 10,000 times the
mass of our Sun. This is a star nursery,
with about 2,500 young stars estimated to be
within the nebula. These stars were formed from the
gas and dust in the Rosette,
and are now causing the hydrogen gas in the
nebula to glow, absorbing invisible infrared star
light and emitting it mostly as red and blue light
that we can see.
Moravian G3-16200 EC camera (on loan from
O’Telescope), Optolong R, G and B filters,
106mm Tak FSQ-106 at f/3.6, Paramount MX, QHY5 guide
camera 50mm f.l. guide scope. Acquisition with the
SkyX, Manually focused.
All pre-processing and processing in PixInsight.
Acquired from my SkyShed in Guelph. No moon, no cloud,
average transparency and poor seeing.
7x5m R, 11x5m G, and 12x5m B (total=2hr30m).
to submit your pictures
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