NGC 4725 - One Armed Spiral Galaxy (Hamza Ilyas @Muslimastronomer)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: NGC 4712 · NGC 4725

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NGC 4725 - One Armed Spiral Galaxy

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NGC 4725 - One Armed Spiral Galaxy

Although this project started in Dec 2022, bad weather here in London didn't allow me to finish this project until a few months ago. Imaged with the 9.25 Edge HD (10.2 hrs for Lum) and 8" XLT SCT (11.8 hrs for RGB) over several weeks in Dec 2022 until March 2023. I finally had the time to sit down and get this project out of the pending file. I do enjoy this spiral, and will certainly revisit it again when I get the two mounts under dark skies. Until then, not bad for London skies....

NASA Summary
While most spiral galaxies, including our own Milky Way, have two or more spiral arms, NGC 4725 has only one. In this sharp color composite image, the solo spira mirabilis seems to wind from a prominent ring of bluish, newborn star clusters and red tinted star forming regions. The odd galaxy also sports obscuring dust lanes a yellowish central bar structure composed of an older population of stars. NGC 4725 is over 100 thousand light-years across and lies 41 million light-years away in the well-groomed constellation Coma Berenices. Computer simulations of the formation of single spiral arms suggest that they can be either leading or trailing arms with respect to a galaxy's overall rotation. Also included in the frame, sporting a noticeably more traditional spiral galaxy look, is a more distant background galaxy.

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Description: Amended saturation, background

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Status	Advanced success
Started	...
PixInsight job	3SEJH5RBB5SQ34G93WMS61PSZ350W4M9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h50m20s.900
RA (top/left)	12h51m03s.938
RA (top/right)	12h49m21s.648
RA (bottom/right)	12h49m36s.400
RA (bottom/left)	12h51m18s.270

Dec (center)	+25°28′51″.82
Dec (top/left)	+25°45′27″.79
Dec (top/right)	+25°43′00″.98
Dec (bottom/right)	+25°12′16″.92
Dec (bottom/left)	+25°14′43″.84

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