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.




PROGRAMS FOR JULY 2018


July 4 - Holiday - No Meeting


July 11 - Observing Night - This will be the FIRST observing night we have had in MONTHS!  The forecast is for clear skies so conditions should be as good as it gets at our observing site at the Vanderbilt Museum.  Bring your own telescopes or binoculars, or view the skies through our equipment.  Everyone is welcome - you do not have to be a member to attend our observing sessions


July 18 - “How to Observe the Planets” - Members will take part in an informal discussion where they offer their experience and techniques of how they observe Jupiter, Saturn and Mars and other planets.  They will discuss equipment and filters, and observing techniques.  Everyone is welcome to contribute.


July 25 - The Apparition of Mars, 2018 - by Frank MelilloAll eyes in the sky this summer! There is one bright reddish object shinning in the south. It is the planet Mars and it will be almost as bright as Jupiter, and larger than it has been since 2003.  At opposition on July 27th it will be 23.9 arc seconds in diameter, which will be about half the size of Jupiter. It is an extraordinary opposition! It is a very, very special year for Mars.   Find out tonight what is this all about and how to get ready to observe Mars up-close! 


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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.