Arp 27 (NGC 3631)

  Another Spiral Galaxy with One Heavy Arm.  The heavy arm is the nearly straight one above the core, cutting across the general sweep of arms, heading just south of east.  Also note the faint one extending out on the north side, and the faint halo on the east side.  The Atlas note is "note straight arms, absorption tube crossing from inside to outside of S arm".  This can be seen better in the Atlas image.

Atlas Image

 10-inch Newtonian, StarlightXpress MX716, 26 minutes
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