NGC4151 - The Eye of Sauron (Pete Mumbower)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: HD105663 · HD105881 · NGC 4151 · NGC 4156

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NGC4151 - The Eye of Sauron

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NGC4151 - The Eye of Sauron

The Eye of Sauron makes another appearance in our skies (The other being the Helix Nebula in the fall in Aquarius). Though this time manifesting itself as a Seyfert Galaxy. Visually it is fairly bright shining at magnitude 11.5 and a good reason why it was first mentioned in 1786 by William Herschel. Nearby at the 8 o'clock position is the nice tight armed spiral galaxy, NGC4156. Also visible here below center of is another sprial(though it doesn't look like one)...PGC38811

This was the first image taken with the collimation decoupler plate on the 8"RC. This plate was machined by a guy on CN. This solves the problem of the focuser and entire imaging train being direction attached to the primary mirror cell. So now the collimation is very solid and pretty much does not move around regardless of the scopes pointing angle. Also collimation is much simplified because the secondary, primary, and focuser alignment are all independent of each other.

Of note with this is the first time I can recall that the nucleus of a galaxy produced a diffraction spike from any of my scopes with a secondary spider. Not sure how to handle that in processing, so I left it.

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Status	Advanced success
Started	...
Astrometry.net job	7579765
PixInsight job	74BD1NS5RS7CT22W1VE7PU3TSELUXK50
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h10m30s.620
RA (top/left)	12h09m21s.269
RA (top/right)	12h09m23s.837
RA (bottom/right)	12h11m39s.235
RA (bottom/left)	12h11m38s.108

Dec (center)	+39°24′23″.11
Dec (top/left)	+39°44′02″.56
Dec (top/right)	+39°04′28″.21
Dec (bottom/right)	+39°04′41″.86
Dec (bottom/left)	+39°44′15″.61

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NGC4151 - The Eye of Sauron

NGC4151 - The Eye of Sauron

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NGC4151 - The Eye of Sauron

NGC4151 - The Eye of Sauron

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