M104, its globular clusters and some very old photons (Torben van Hees)

Celestial hemisphere: Southern · Constellation: Virgo (Vir) · Contains: M 104 · NGC 4594 · Sombrero Galaxy

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M104, its globular clusters and some very old photons

Link: http://astro.van-hees.name

Powered byPixInsight

M104, its globular clusters and some very old photons

Link: http://astro.van-hees.name

This galaxy is located in the direction of the Virgo galaxy cluster but not part of it - it is much closer at 30 million lightyears. Its size is about 50000 light years, so half the size of the Milky Way, but its central black hole is larger by a factor of 240. Being able to photograph it is quite special to me, as it is one of the first deep sky objects I read about as a child. I'm glad it worked out this well, as it never rises above 28° here.

M104 has an extensive halos of about 2000 globular clusters. I've annotated the inverted version with detected globulars. They are marked in blue. Almost all globulars with a listed V magnitude in SIMBAD are detected, there are only a couple that have too little contrast against the galaxy disk in this rendering.

Also in the FOV are quite a few quasars, which are marked in red and annotated with redshifts, where available from the Milliquas survey. I have not filtered those for those that are detected, but quite a few are, up to a redshift of z=3.2 (upper left), corresponding to a light travel time of 11 billion years. That quasar is now at a distance of about 21 billion light years.

I‘ve not singled out the object with a higher quoted redshift because they are seen through the galactic halo of M104 - I‘m not sure how much that affects the redshift measurements.

Final
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Title: Full FOV

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Title: Globulars and Quasars

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Status	Advanced success
Started	...
Astrometry.net job	5726672
PixInsight job	U9SITRYU9ZGTX0K3QWR5CV8M8P6LSQH1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h39m58s.990
RA (top/left)	12h40m53s.770
RA (top/right)	12h39m17s.440
RA (bottom/right)	12h39m04s.749
RA (bottom/left)	12h40m41s.150

Dec (center)	-11°37′23″.17
Dec (top/left)	-11°21′31″.43
Dec (top/right)	-11°19′26″.97
Dec (bottom/right)	-11°53′14″.81
Dec (bottom/left)	-11°55′18″.39

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M104, its globular clusters and some very old photons

M104, its globular clusters and some very old photons

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M104, its globular clusters and some very old photons

M104, its globular clusters and some very old photons

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