AprilTargets < Main

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---+ April Targets

These are deep sky targets seen from Caltech 8-10PM Local in April.

|  *Object*  |  *Alternative Names*  |  *Type*  |  *Brightness*  |  *Surface Brightness*  |  *Size*  |  *Suggested Telescope/Eyepiece*  |  *Notes*  |  *Links for More Information*  |
|  Beehive Cluster  |  M44  |  Open Cluster  |  3.1  |  12.1  |  90'  |  >= 10"  |  750 Myr old, 600 lyr away  |  [[http://astropixels.com/openclusters/M44-01.html][Astropixels]] [[http://messier.seds.org/m/m044.html][SEDS]] [[https://en.wikipedia.org/wiki/Beehive_Cluster][Wikipedia]]  |
|  M3  |  -  |  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]]  |
|  Christmas Tree Cluster  |  NGC2264, Cone Nebula  |  Open Cluster  |  3.9  |  8.25  |  20'  |  >= 8"  |  Young star cluster embedded in faint emission nebula; 2.6 klyr away, ~3 Myr old; brightest member is a binary O star  |  [[http://messier.seds.org/xtra/ngc/n2264.html][SEDS]] [[https://en.wikipedia.org/wiki/NGC_2264][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]]  |
Topic revision: r1 - 2016-04-12 - OutreachAdmin