March 26, 2017

NGC 5466 (Mar. 25, 2017)

This globular cluster is about 52,000 light years away and appears in the constellation Bootes.  As globs go, this one is sparse.

A galaxy on the lower left (northwest) of the image is PGC 1840894, magnitude 17.70.  The larger galaxy at lower right is PGC 1835025, magnitude 17.37.

The most interesting thing (I thought) about this globular is that a galaxy glows through it.  At the lower right of the cluster, one glowing object is a smudge instead of a star.  It is about 25% of the way from the center of the cluster to PGC 1835025.  It is very faint.  I have no idea if it has a name. A Hubble shot of NGC 5466 (lower left in that version) shows that this smudge is actually a spiral galaxy in the far distant background.  Interestingly, the Hubble image also shows several other galaxies shining through that are not visible in my data.  You can see them if you zoom in and pan around.

This is 8x480" with the SXVF-H9 through the CFF Classical Cassegrain at f/7.93.

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