Astronomical Society

of Long Island


NOTICE:  All content on this site is Copyright ©2016 by Ken Spencer, The Astronomical Society of Long Island, and the respective photographers.  All Rights Reserved.  Reproduction is forbidden without express written permission.


NOV 7 - Observing Night. We will observe only if the skies are clear. Bring your own telescope or binoculars, or come and observe through our instruments. New Moon is November 9th. Do Not park on the lawn.

NOV 14 Understanding Eyepieces - by Ed Anderson.  Once you have a telescope, eyepieces are the next part of the tool set, but there are so many options. This discussion will help clarify the types, specs and uses. We will cover eyepiece designs, focal length, apparent field of view, optical elements, coatings and other considerations when choosing eyepieces for purchase and use during an observing session. Visitors and guest are welcome! We will have a discussion after the presentation where questions can be asked and the experience of others can be added to the topic. 

NOV 21 - Thanksgiving Eve - NO MEETING 

NOV 28 - The Hunt for Dark Matter - by Rouven Essig is an Associate Professor of Physics at the C.N. Yang Institute for Theoretical Physics at Stony Brook University in Stony Brook, New York.  He is a particle physicist. This means that he studies the fundamental building blocks of matter (particles) and their interactions (forces), and how they shape our Universe.  He was born and grew up in South Africa. His undergraduate education took place at the University of the Witwatersrand in Johannesburg. He received his PhD in 2008 from Rutgers University and was a Research Associate at SLAC National Accelerator Laboratory at Stanford University from 2008 to 2011, before joining the faculty at Stony Brook University in 2011. Scientists have an enormous amount of evidence that 85% of the matter in our Universe is “dark” and unknown. A broad range of experiments, ranging from sensitive detectors located deep underground to powerful instruments on satellites, are searching for signs of this mysterious matter. This talk will review the evidence for dark matter and the exciting scientific quest to uncover its identity. It will also explain why we hope to be successful in this quest in the next few years. 



NGC 4216 in the Virgo Cluster by Dave Barnett

Our intrepid astrophotographer Dave Barnett apparently needs no sleep at all, judging by his latest handiwork.  In the center of the frame is the galaxy NGC 4216 in the Virgo Cluster.  It is 40 million light-years distant, and is an edge-on spiral galaxy.  It is nearly 100,000 light-years across, about the size of our own Milky Way galaxy.  It is flanked by fellow Virgo cluster member NGC 4222.  If you are thinking of trying astrophotography, you should know this is not a simple trick.  He used an 8” f/4 Newtonian, and this final image is a stack of 4 minute long sub exposures with a total time of 92 minutes.