... click image to view discuss) . ... Submitted by William Lee on 05/08/2007 01:29:59 . ... 12 ten second images, stacked with MaximDL; ST-237 on Sky Watcher 100mm F/10 ED triplet apochromatic refractor . ... Imaged 7/2/07 3am. ... Imaged 7/2/07 2am. ... July 2nd images, reprocessed with MaximDL+DSLR and GREYCstoration for noise reduction. ... Submitted by William Lee on 09/26/2009 10:11:41 . ... Submitted by William Lee on 01/02/2010 14:57:36 . ... Copyright (c) Amateur Telescope Makers of Boston, Inc...

... Home Gallery Observing Events 2012 Transit of Venus Transit of Venus by AAA member Amy Wagner . Become a member! ... Beyond New York City . 2012 Transit of Venus . 2004 Transit of Venus . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2012 Transit of Venus by AAA member Amy Wagner . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... From left to right, astronaut Claude Nicollier, author Jeff Bennett, astrophysicist Mario Livio, and astronomer James Kaler sign copies of recent books and photos. Photo Credit: Robert Naeye . ... Author William Sheehan (left) and new ASP Board member David H. Levy (red shirt) sign copies of their latest book. ... ASP Board member Jeanne Bishop and ASP Editorial Assistant Marilyn Delgado discuss the Annual Meeting at the registration desk. ... Photo Credit: Diane Richards . ...

... Classes . ... casa::HostInfo . ... Miscellaneous information about this host and process. ... Returns 0 if unable to determine the number of CPUs. static ssize_t . ... Get memory info (in KBytes). static ssize_t . ... static ssize_t casa::HostInfo::memoryFree . ... static ssize_t casa::HostInfo::memoryTotal . ... Returns -1 if unable to determine memory info. static ssize_t casa::HostInfo::memoryUsed . ... Returns -1 if unable to determine swap info. static ssize_t casa::HostInfo::swapUsed . ...

... Tonight's Sky . ... News . Observing . ... Supernova showered Earth with radioactive debris . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Supernova simulations reveal new processes . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...