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Our Current Club Events Calendar
Our Next Monthly Meeting:
Date: Tuesday, September 1st, 2015
Z Cam stars are a small subset of dwarf novae that exhibit standstills in their light curves. Most modern literature and catalogs of cataclysmic variables quote the number of known Z Cams to be on the order of 30 or so systems. After a four-year observing campaign and an exhaustive examination of the data in the AAVSO International Database tis data has now been trimmed by a third. One of the reasons for the misclassification of some systems is the fact that the definition of what a Z Cam is has changed over the last 85 years to what it is today. This has caused many stars formerly assumed to be Z Cams or rumored to be Z Cams to be eliminated from the final list. In this month's presentation Dr. Kolman will present the results of the investigation into 65 stars listed at one time or another in the literature as Z Cams or possible Z Cams. Dr. Roger will discuss the findings of the AAVSO ZCAMpaign
The public is welcome to attend, free of charge.
Our Next Astronomy Fundamentals Program:
Date: Tuesday, September 15th, 2015
As the summer triangle flies past the zenith and begins to sink in the west in the autumn skies, we see harbingers of winter rise in the east: Orion led by the Pleiades. And the great showpieces, the Andromeda Galaxy and The Perseus Double Cluster, rise higher above the horizon haze. The crisp cool nights of the fall months, as darkness falls earlier, are great times for observing (and if the winters keep up as they have, these will be the last comfortable views of those constellations till early spring).
The public is welcome toThe public is welcome to attend, free of charge.
The next meeting of the NAA Executive Board will be September 8th at the Culver's Restaurant 60504, Naperville (Rt. 59 & 75th St.). Starting time 7:30pm; all N.A.A. members are welcome to attend.
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