PolHors Toward the end of the fourteenth century there lived in England a man named Geoffrey Chaucer. He was a customs officer of the king and, because of his position, he was able to travel in England and Europe. He met people who owned books (that was not a very common thing then!) and he read as many books as he could get his hands on. He may have read, or at least skimmed thru, a great number of the books that were then in existence. In the Middle Ages very few people could read. A Walk Through the Southern Sky, Milton Heifetz, 9780521689458 Click on the Google Preview image above to read some pages of this book! A Walk through the Southern Sky is a beautifully illustrated guide to the stars and constellations of the southern hemisphere. By following the simplified and easy-to-use starmaps, readers will be able to identify constellations with no equipment but normal sight and a clear night sky. This book provides clear instructions on how to determine star sizes and the distances between stars, allowing readers to move easily between constellations. The budding astronomer is introduced to the mystery and wonder of the southern sky as the myths and legends of its stars and constellations are wondrously retold. The third edition of this magical book features a new moon map, an updated list of planet positions, additional illustrations and more realistic star maps.
SkyServer DR7 Tools for Visual Exploration The visual exploration tools built for the SkyServer make it easy to visualize and explore detailed astronomical data in regions of the sky covered by the Sloan Digital Sky Survey. One can specify regions of interest by central position and size. An underlying web service then combines the relevant images to form a JPEG mosaic* at the requested wide range of resolutions. One can overlay additional useful information, including: boundaries of survey fields and aperture plates, outlines of individual objects and data quality masks, and locations of photometric and spectroscopic objects. The tools can also search for lists of known objects, provide links for detailed information, and formulate new database queries.
Visualizing Databases I’ve become quite the fan of Gephi, lately, and received a good-natured challenge by one of my colleagues, which went something like, “Why is a everything a network with you, now?” Obviously, in the case of social network-like phenomena, such as mapping collaboration in the Digital Humanities with the DH@Stanford graph–network theory and network language (whether visual or theoretical) make sense. Network analytical tools like Gephi are also only a short step away from spatial analytical tools, like ArcGIS, many of which are used to ask questions about geographic networks and not about the kind of continuous data found in topography. Tooling Up for Digital Histories as part of the DH@Stanford graph, which describes collaboration as temporally-aware instances of interconnected social networks at Stanford University.
My Comet Couch! - Article My Comet Couch! by Eugene Artemyeff email@example.com I recently I purchased a new pair of Apogee 25x100's. Pleasing optical performance, great light gathering, but their ten pounds made my existing light weight parallelogram mount flex like a diving board once I put the required amount of counterweights on it.
Escapist Games Star Chart Android Support & FAQ: iOS Support Page Problems with Compass Problems with Augmented Reality Problems with Downloading Problems with Gingerbread 2.3 Upgrade from Star Chart Lite: To upgrade Star Chart Lite to the full version which includes Messiers, Constellations and Search functionality, visit the Android Marketplace.Access Denied Error: This error occurs when Star Chart has not been able to connect to Google's payment authentication servers. Reasons for this error occurring include: No internet access available upon launch / Google's servers are temporarily down / Google's authentication process has been delayed. There are a few options for solving this problem: Ensure your device is connected to the internet and launch Star Chart.
The Atlas Coelestis (1742) of Johann Gabriel Doppelmayr Johann Gabriel Doppelmayr (also spelled Doppelmair, Doppelmaier or Doppelmayer) was the son of the Nuremberg merchant Johann Siegmund Doppelmayr (1641-1686) and was born on 27 September 1677 (many early sources incorrectly give his year of birth as 1671). His father had an interest in applied physics and was one of the first to design a vertical vacuum air pump in Nuremberg. Doppelmayr enrolled at the gidiengymnasium in 1689 and after completing his studies in 1696 enrolled at the nearby university of Altdorf to study law which he completed in 1698 with a dissertation on the Sun. He then attended lectures on mathematics and natural philosophy by Johann Christoph Sturm (1635-1703) which he completed in 1699 with his dissertation De visionis sensu nobilissimo, ex camerae obscurae tenebris illustrato. He continued his studies on physics and mathematics at the university of Halle where he also learned French and Italian.
Another DIY Parallelogram Binocular Mount Another DIY Parallelogram Binocular Mount Submitted: Wednesday, 28th March 2007 by Dennis Simmons Introduction At the Queensland Astrofest in 2003 I stood mesmerised by the sight of a fellow astronomer, gliding effortlessly around the cosmos on his commercial, motorised, binocular chair, replete with GoTo capability. The whole two-eyed, recline-in-comfort, “drive-me-there” observing experience looked simply awesome. At the time, I had with me my Vixen giant binocular (30x125), supported by the very nice Vixen Alt-Az fork mount, all fitted on a home made wooden tripod. AstroShop - Product Details The newest edition of The Backyard Astronomer's Guide includes the latest data and answers the questions most often asked by home astronomers, from beginners to experienced stargazers. The authors provide expert guidance on the choices of telescopes and other equipment; photographing the stars with a telescope; and star charts, software and other references. They cover daytime and twilight observing, planetary and deep-sky observing and much more. With over 500 color photographs and illustrations, The Backyard Astronomer's Guide is one of the most valuable, beautiful and user-friendly astronomy books ever produced. New and updated for this edition:
Hubble's Hidden Treasures 2012 Since 1990, Hubble has made more than a million observations. We feature many of these on spacetelescope.org, and the most stunning are in our Top 100 gallery and iPad app. But there are thousands of pictures in Hubble’s science archive that have only been seen by a few scientists. We call these images Hubble’s hidden treasures — stunning images of astronomical phenomena that have never been seen and enjoyed by the public.
Live map of London Underground trains Loading... Powered by Leaflet — Map tiles © Thunderforest, data © OpenStreetMap contributors. Live London Underground map Gary's Motorized Big Binocular Chair - by Gary Honis - Detailed Construction Procedure - Page 1 of 7 Gary's Motorized Big Bino Chair by Gary Honis Animation - Taking the chair for a spin: Detailed Construction Procedure Page 1: This page - Introduction, Design Objectives & Main Components Page 2: Construction of Ground Board Page 3: Construction of Chair Base Page 4: Construction of Binocular Mount Page 5: Setting Up For Field Use Page 6: Finishing and Painting Page 7: Peltier Beverage Cooler and Warmer Page 8: Version II - with Speed Reducer