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---+ June Targets

These are deep sky targets seen from Caltech 9-11PM Local in June.

|  *Object*  |  *Alternative Names*  |  *Type*  |  *Brightness*  |  *Surface Brightness*  |  *Size*  |  *Suggested Telescope/Eyepiece*  |  *Notes*  |  *Links for More Information*  |
|  M3  |  NGC5272  |  Globular Cluster  |  6.2  |  12.2  |  18'  |  >= 10"  |  One of the brightest and biggest globulars; 500,000 stars, 8 Gyr old, 34 klyr away  |  [[http://astropixels.com/globularclusters/M3-01.html][Astropixels]] [[http://messier.seds.org/m/m003.html][SEDS]] [[https://en.wikipedia.org/wiki/Messier_3][Wikipedia]]  |
|  M13  |  NGC6205, Hercules Cluster  |  Globular Cluster  |  5.8  |  11.0  |  20'  |  >= 10"  |  Appears as a faint white cloud, can resolve some stars: 300,000 stars, 11.6 Gyr old, 22 klyr away; the [[https://en.wikipedia.org/wiki/Arecibo_message][Arecibo Message]], one of the first attempts at communicating with extraterrestrials was beamed at M13  |  [[http://astropixels.com/globularclusters/M13-01.html][Astropixels]] [[http://messier.seds.org/m/m013.html][SEDS]] [[https://en.wikipedia.org/wiki/Messier_13][Wikipedia]]  |
|  M5  |  NGC5904  |  Globular Cluster  |  6.7  |  13.2  |  23'  |  >= 10"  |  One of the most voluminous globular clusters in the Milky Way, with a width of 165 lyr. 25 klyr away, contains several hundred thousands stars  |  [[http://astropixels.com/globularclusters/M5-01.html][Astropixels]] [[http://messier.seds.org/m/m005.html][SEDS]] [[https://en.wikipedia.org/wiki/Messier_5][Wikipedia]]  |
|  Ring Nebula  |  M57  |  Planetary Nebula  |  8.8  |  10.9  |  230"  |  >= 10"  |  Appears as a faintly colored ring, small.   |  [[http://astropixels.com/planetarynebulae/M57-01.html][Astropixels]] [[http://messier.seds.org/m/m057.html][SEDS]] [[https://en.wikipedia.org/wiki/Ring_Nebula][Wikipedia]]  |
|  Alcor & Mizar  |  Horse and Rider, Handle of Big Dipper  |  Double Star  |  0.33  |  -  |  14" apart  |  >= 6"  |   Historically used by many cultures as a test of vision to identify the two stars separately;  85 lyr away.  |  [[http://www.space.com/6823-double-star.html][Space.com]] [[https://en.wikipedia.org/wiki/Mizar_and_Alcor][Wikipedia]]  |
|  Albireo |    |  Double Star  |  0.33  |  -  |  35" apart  |  >= 6"  |   High constrast binary with one star red, one star blue.  Good excuse to talk about stellar types and colors and evolution. |  [[http://earthsky.org/brightest-stars/albireo-finest-double-star][EarthSky]] [[https://en.wikipedia.org/wiki/Albireo][Wikipedia]]  |
Topic revision: r1 - 2016-04-12 - OutreachAdmin