Probably due to the weak green with only one sub due to dawn and clouds.
I tried it with a pseudo green and got the same color however. I want
to retry it with H alpha data as I suspect many of those star knots will
light up in H alpha.

Rick

On 6/19/2012 4:13 PM, Stefan Lilge wrote:
Great detail Rick.
Colour looks a bit strange though. But I shouldn't complain as I only have a
very old b/w version of this galaxy.

Stefan

"Rick schrieb im Newsbeitrag
.com...
NGC 5921 is a pretty face on barred spiral galaxy in Serpens Caput about
3 degrees north of M5. It is well worth visiting when viewing the far
more commonly targeted M5. Its distance seems poorly understood.
Redshift puts it at 70 million light-years. A 1988 Tully-Fisher
determination says 82 but a 2009 T-F measurement came up with 46. An
analysis of super nova 2001X says 67 which is in good agreement with the
red-shift measurement. Still, based on the star clouds I see in the
galaxy I would have to think the closer 46 million light-year estimate
is closer to the correct distance. I doubt I'd resolved these as well
at the longer distances. NED classes it SB(r)bc LINER. The NGC project
says SBbc.

While NED shows thousands of galaxies in my image only one has a
redshift. It is CGCG 049-140 at 580 million light-years. It is the
round blue galaxy at the very top of the image a bit right of center.
None of the other galaxies had a redshift at NED. All the other
galaxies are from either the 2MASS catalog or the Sloan survey. Except
for three in the extended PGC catalog none of the rest made any
secondary catalog.

14" LX200R @ f/10, L=4x10' RB=2x10' G=1x10', STL-11000XM, Paramount ME

Rick
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