September Targets

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

Object	Alternative Names	Type	Brightness	Surface Brightness	Size	Suggested Telescope/Eyepiece	Notes	Links for More Information
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 Arecibo Message, one of the first attempts at communicating with extraterrestrials was beamed at M13	Astropixels SEDS Wikipedia
Ring Nebula	M57	Planetary Nebula	8.8	10.9	230"	>= 10"	Appears as a faintly colored ring, small.	Astropixels SEDS 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.	EarthSky Wikipedia
Double Cluster	NGC869 + NGC884 Caldwell 14	Open Cluster	3.8	10.9	60'	>= 10"	Two bright, resolved star clusters side by side. Need wide FOV. Both are young clusters, 7 klyr away, ~14 Myr old, containing luminous B stars	Astropixels SEDS Wikipedia
Andromeda Galaxy	M31	Spiral galaxy	3.4	13.4	178'x63'	>= 10"	Can only see core in telescope, appears as faint, white cloud. 2.5 Mlyr distant. Similar in mass and luminosity to Milky Way. Moving toward us at 70miles/s; Collision expected in 2.5 Gyr	Astropixels SEDS Wikipedia

Topic revision: r1 - 2016-07-04 - OutreachAdmin