... A sundial with a vertical pointer (" gnomon ") will indicate noon correctly when its shadow points north. ... Cut the paper along the marked line: one half will serve as base , the other will be used to construct the gnomon . In the gnomon part, cut away the two marked corners. ... With the page folded in its middle, cut out along the curved line , cutting a double thickness of paper in one cut. ... Score the other two secondary lines, then fold the gnomon sheet along them. ...

Pulkovo permanent GNSS station PULK . ... Initially, Trimble 4000SSE receiver and TRM33429.20+GP antenna without radome were installed at the station. ... Both hourly and daily data are delivered to EPN data centers. ... Daily PULK station position is computed in the Precise Point Positioning (PPP) mode using orbits, clocks, EOP, and antenna absolute phase center corrections provided by the JPL ftp service . Ocean loading is computed using data obtained from the OSO ocean tide loading provider . ...

The CDK700 is a 27-inch, state-of-the-art, corrected Dall Kirkham telescope. On a Nasmyth mounting with precision encoders, it can point anywhere in the sky within a few seconds, to a precision of a few seconds of arc. The telescope has two focal positions. ... Kent observatory in August 2013. It is currently being commisioned for routine automated and remote operation for teaching and research. CDK700 installation photos . ... kielkopf at louisville dot edu . ...

... AstroAsciiData is a Python module to handle ASCII tables. ... The idea to develop this Python module emerged from the fact that ASCII tables continue to be one of the most popular and widely used data exchange formats in astronomy and probably science in general. ... To load this ASCII table, go into Python, load the AstroAsciiData module and read in the table with: . ... demo = asciidata.open('webexa.txt') . ... Users who only want to work with ASCII tables neeed no further python modules. ...

... The Armagh Human Orrery is a dynamic model of the solar system in which people play the role of the moving planets. The users' interactions with the model lead to greater awareness of their place in space and understanding of our planet's changing position with time. ... The model is constructed to a scale of 1 metre to 1 astronomical unit. ... It contains more than 200 individually inscribed discs showing the positions of objects at intervals of 16 days or multiples thereof. ...

Main Sections LabIR main page . ... Before mounting FIRPO it is necessary to check the chopper throw. ... It is possible to make these measurements using a diaphragm and a battery light. The diaphragm is one of the small barrels (choose the one with the smallest hole for this purpose), and must be inserted, with the wide opening on top, into a special place close to the telescope focus (push well). ... Check quickly that no ice is being formed through the neck (use a long thin stick). ... open . ...

. Welcome to AstroNet . Sternberg Astronomical Institute . Moscow University . What is the AstroNet , people, facilities and perspectives . SAI Crimean Observatory . SAI Astronomical Databases . Collection of Net references . AstroWeb: Astronomical Internet Resources . Net Search . Today's Weather Map of Russia . Any questions or bug reports regarding this mirror of SAI MSU Home Page should go to M.G.Gavrilov .

... NASA's newest Great Observatory, the Chandra X-Ray Observatory (CXO) -- formally known as the Advanced X-Ray Astrophysics Facility (AXAF) -- launched on July 23, 1999 and represents such an advance. ... Hughes Danbury Optical Systems (HDOS), now Raytheon Optical Systems Incorporated, figured and polished the x-ray optics; Optical Coating Laboratory Incorporated (OCLI) coated the polished optics with iridium; and Eastman Kodak Company (EKC) mounted and aligned the optics and provided the optical...

Russian version of HP . ... StarCalc is the fastest professional astronomy planetarium & star mapping program for Windows 9x/ME/NT/2000/XP (StarCalc version for PocketPC computers you can found here ). ... Extensibility : This program is based on common "Plugin StarCalc interface to catalogs and object groups", which allows program to add new modules as Plugins. ... Welcome to the Pocket StarCalc Home Page: . ... Some bugfixes in eclipses" and line" plugins - see the new versions in downloads page. ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

... Such thoughts might occur to people witnessing the approach of an impressive shelf cloud . ... Similarly, shelf clouds differ from wall clouds because wall clouds typically trail storm system s. The above pictured shelf cloud was photographed toward the southwest during a trip crossing the prairies of Saskatchewan , Canada on the Trans-Canada Highway in 2001 August. A rising Sun illuminated the impressive cloud from the east as it advanced from the west. ... Publications with keywords: clouds . ...

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

... Solar Telescope Projection at the Beijing Planetarium . They had a solar telescope on the roof of the planetarium, and through a clock drive and some mirrors, projected a 1.5 meter view of the sun, spots and all, for people inside to view. Using some beam splitters, they also had a spectrographic display and this, a small solar projection where you could trace sunspots onto paper to take with you. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Stellarium 0.12.3 . ... Classes . ... ClassљList . ... Refraction Class Reference . ... virtual voidљ . forward ( Vec3d &altAzPos) const . ... backward ( Vec3d &altAzPos) const . Remove refraction from position ("reduce"). ... forward ( Vec3f &altAzPos) const . ... setupGLSLTransform ( StelGLSLShader *shader) . ... virtual void Refraction::backward . ... virtual void Refraction::disableGLSLTransform . ... virtual void Refraction::forward . ... virtual void Refraction::setGLSLUniforms . ...

... Pre-university education . ... For the year Samara State Aerospace University moved up in the ranking of Vladimir Potanin Foundation from the 44th to the 10th place and added three positions in the ranking of universities reputation Expert RA in the field of Engineering, natural and exact sciences . Samara State Aerospace University has significantly improved its position in the ranking of universities of Vladimir Potanin Charitable Foundation at the end of academic year 2014-2015. ...

... Home Articles An Asymmetrical Mount For a 17.5? Newtonian . ... Beyond New York City . ... An Asymmetrical Mount For a 17.5" Newtonian . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... I live in New York City. ... The basic Dobsonian design uses a mirror box. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

ATM Forum Message . ... Astigmatism On Rough Grinding . ... I start hogging out my 15 inches mirror and 19mm thickness, using Chordal stroke, my target seggita is 3.985 mm with f/6, now I’ve reached 3.10 mm depth, and the curve spreads out to cover 75% of the mirror diameter. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

StarShine-3: . ... The satellites are covered by nearly 1000 small, front-surface aluminum mirrors that are machined by technology students in Utah and polished by tens of thousands of students all over the world. ... And this is only small story about it. ... We will be able to measure the angular position of that satellite by observing sunlight flashes from small mirrors mounted on the surface of the satellite, as it passes across the starry sky before sunrise and after sunset.. ... Starshine 3 . ...

... The unlocked gate at the entrance to the observatoryтАЩs gravel driveway should remain closed to prevent the public from driving back to the observatory. ... This means that if there are still members of the public present at the observatory who do not wish to leave by 11:30 PM they will be locked in the park until a keyholder leaves and secures the gate(s) behind him/her. ... Roll the roof back using the hand crank near the computer room. ... Amateur Astronomers Association of Princeton, Inc., ...

... astro-ph . ... Abbott, The Virgo Collaboration: B. P.. ... Armstrong, Ryan. ... Bacon, David. ... Bernstein, Gary M.. Bernstein, J. P.. ... Blanton, Michael R.. ... Brooks, David H.. ... Chiang, James. ... Chornock, Ryan. ... Collaboration, for the XENON. Collaboration, Tiina Suomijarvi for the Pierre Auger. Collett, Thomas E.. ... Dark Energy Survey Collaboration. ... Diehl, H. Thomas. ... Etherington, James. ... Foley, Ryan J.. ... Fruchter, Andrew S.. ... Smith, Christel J.. ...