M13 is about 23,000 ly from earth in the constellation Hercules.  It is bright and beautiful and all of you are very familiar with it.  On the other hand, NGC 6207 is 30 to 48 million ly from earth.   

In June of 2020 I asked my 11 year old granddaughter to pick an object for me to image in an effort to help her develop some interest in the universe.  We pointed the telescope almost at the zenith and captured 50 min of data.  I processed it and showed her.  It worked.  She will forever be interested in globular clusters, especially "hers" - M13.  As a result this is a favorite of mine also.  

To help understand how much more dense this cluster is than where our sun is, it is estimated that near the center there could be 100 stars in a cube 3 light years on a side, whereas the nearest star to the sun is over 4 light years away.  It contains several hundred thousand stars, and most curiously, we are still trying to understand how they are formed.  Since the stars are so close together, it was thought they formed at about the same time.  But nearly all globular cluster have stars that were formed at different times or have differing compositions.  Some may have had multiple star formation periods and some may be remnants of smaller galaxies captured by larger galaxies.  

Globular Clusters are among the oldest objects in a galaxy, which indicates some may have have formed by getting a "head-start".  Early in the formation of a galaxy,  if local volumes of higher density medium existed, there may have been areas of more efficient star formation resulting in high density clusters in a relatively short time...yielding a local neighborhood of hundreds of thousands of stars, all orbiting the cluster's center of mass.  So a question - how dark is night on a planet orbiting a central star in M13?

To get a sense of scale in this image -

There is IC 150998, a star at 1800ly.

M13 at 23,000ly.

NGC 6207 is a 12.1 magnitude galaxy about 30-55 million light-years from earth and is designated as SA(s)c. The diameter is estimated at about 39,100ly.   It has complex knotty spiral arms, faint outer arms, and a bright central lens without a definite nucleus.  A globular cluster in NGC 6207 would be about magnitude 22 on earth!

Now that really small galaxy IC 4617 is a bit farther away - estimated to be 550 million light-years away.

It is amazing how many orders of magnitude difference in distance there is in these images!  Only in the night sky, and captured in the backyard.