Celestial hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  NGC 4712  ·  NGC 4725
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NGC 4725 - One legged spiral galaxy in Coma Berenices, Monty Chandler
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NGC 4725 - One legged spiral galaxy in Coma Berenices

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NGC 4725 - One legged spiral galaxy in Coma Berenices, Monty Chandler
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NGC 4725 - One legged spiral galaxy in Coma Berenices

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Description

A barred spiral galaxy located in the constellation Coma Berenices, about 40 million light-years away. It's an intermediate galaxy with a prominent ring structure, and is roughly the size of the Milky Way at over 100,000 light-years across. NGC 4725 is unique in that it only has one spiral arm, while most spiral galaxies have two or more. The galaxy's center has a bar of stars surrounded by a ring of stars, which astronomers call a ringed barred spiral galaxy.

In this color image, the solo spira mirabilis seems to wind from a prominent ring of bluish, newborn star clusters and red tinted star forming regions. This odd galaxy also sports obscuring dust lanes and a yellowish central bar structure composed of an older population of stars.  Also included in the frame is galaxy NGC 4712, sporting a noticably more traditional spiral galaxy look, is a more distant background galaxy.

Imaged 5/1, 5/10 and 5/11.  The night of 5/10 was our Aurora Borealis event.  Imaged from 21:30 to 02:00 each of these evenings.  136 4 minute subs were included, or 9 hours of exposure.  Gear includes an f8 GSO RC8 telescope at 1625mm, an ASI071MC astro camera cooled to 15f, and an EQ6r Pro mount.

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NGC 4725 - One legged spiral galaxy in Coma Berenices, Monty Chandler