I was out last night observing eclipses of 4 stars. One is one of my all time favorites, and nicely placed for late summer/autumn. CX Aqr is an Algol type eclipsing binary (EA) with a period of 0.5559862 days. It's magnitude range is 10.6-11.8 visual. I love it for 2 reasons.
1. If you print off a "c" chart from the VSP, you will notice the very bright star on it. This is Eta Aqr. CX is just a very short star hop away, following an easy star pattern.
2. This star starts off somewhat slowly, then turns on the speed. Within a 10 minute period (how often you should make an observation), it can drop .2 to .4 magnitude. When it hits bottom, she comes right back up, but at a quicker speed. I always find the ascending branch of the light curve to be a bit more steep than the descending.
Print off a chart and give this one a try. You can get the predicted times of minima from the AAVSO website. Just do a search for Eclipsing Binary Star Ephemerides for 2013.
Chris Stephan SET