Celestial Feature of the Week: NGC 6934 (globular cluster)

Posted by Drew
Sep 13 2009

This globular cluster is nicely positioned about 5º south of the tail portion of the small constellation Delphinus, the Dolphin, (del-FIE-nus).     Being so small you might expect that there aren’t any deep sky objects to look at within Delphinus, but this small, 9th-magnitude, globular cluster about 2 minutes in diameter, is visible through a small telescope.  Some have reported seeing it with just a pair of binoculars.  This globular cluster is located about 54,000 light years from Earth.
The constellation that this cluster is in will fit within the field of view of your pair of binoculars.  To some, this constellation looks more like a small kite with a short tail draping generally toward the south. I have even had some friends confuse this small constellation with the Little Dipper.
ngc6934_gemini
This constellation has an interesting history that goes with the names of its two brightest stars: Alpha Delphini (Sualocin) and Beta Delphini (Rotanev).  These names were first published in 1814 by the Palermo Observatory guide.  It was originally thought that both names had no meaning.  That is, until much later when someone noticed that the letters of the star names reversed spelled the Latinized from of the name Nicolaus Venator, the assistant to the director of the Palermo Observatory! It turns out that the director of the Palermo Observatory bestowed the honor of naming the two stars after his assistant.

It is also interesting to note that there are only three stars named after modern time persons.  The two already mentioned and Cor Caroli (Alpha Canum Venaticorum) which was named after King Charles II of England.

While in this area of the sky, you might want to pan northward and look at the objects in Sagitta as well.

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