Arp 79 (NGC 5490C)

Arp 79 is the first of the class Spirals with Large High Surface Brightness (HSB) Companions on Arms.  It is the tiny spiral a little below the center of the field.  This is a two-Arp field, as the large galaxy and companion above the center (near the bright star) make up Arp 117.  The "large" companion to Arp 79 is obviously large only relative to the size of the primary.  It is extremely difficult to find, even in the enlarged detail image below.

The bright elliptical right at the bottom edge of the field is NGC 5490.

Atlas Image

              

  10-inch Newtonian, StarlightXpress MX916, 30 minutes, 15.8' x 20.9'
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