... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Totality's long embrace . ... A long total eclipse of the Moon graces American skies the evening of September 27. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

In the PROJECT we are using the following peculiar . features of RATAN-600 . ... Brightness temperature sensitivity being equal to the antenna temperature sensitivity .. ... Receiver system .. ... Using aperture averaging effect. dual- beam and dual (multi-) frequency filtration, we demonstrated full filtration of the atmosphere noise down to the receiver noise at all scales of acoustics peaks ( Fig.1 , Fig 2 ). ... We select this frequency as the central one in our project. ... Antenna surface . ...

Stellarium 0.12.3 . ... Classes . ... Plugins . ... FileљStructure . ClassљList . ClassљIndex . ... ClassљMembers . List of all members | ... Now Class Reference . const long long intљ . ... Definition at line 32 of file LogFile.hpp . The documentation for this class was generated from the following file: . home/aw/devel/stellarium/trunk/plugins/TelescopeControl/src/servers/ LogFile.hpp . Generated on Sat Aug 10 2013 17:12:44 for Stellarium by љ 1.8.3.1 ...

... Copyrightї1997 Bob Yen (byen@ix.netcom.com) (http://www.comet-track.com/hb/hb.html) . ... Information on Comet Hale-Bopp for the Non-Astronomer Hale-Bopp rotates about twice a day (3/14/97) . ... The Comet Observation Home Page was been selected to receive the Griffith Observatory Star Award for the week of February 2 - 8, 1997 for excellence in promoting astronomy to the public through the World Wide Web. ... Typically, about 1,000 individual users/computers access this page every day. ...

... About 10% of the time is allocated to moving the telescope to the zenith and exchanging the spectrographic cartridges. ... Focus telescope (open-loop)* . ... TOTAL TIME (seconds) . ... This assumes two 60 second arc exposures and two 55 second readouts. ... Otherwise, the arc exposure will likely consist of a 30 second integration followed by a quick 28 second readout, half the normal time. ... The flat-field exposure can be read out with a quick 28 second readout, half the normal time. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . Planets . ... Monthly Sky Notes . ... February . ... The ringed planet will be quite bright, but unlike Jupiter it will not be the brightest point of light in the sky, this accolade will return to Sirius which is the brightest star in our night sky in the constellation of Canis Major. ... Seven days later on February 18, the Moon will be in its full Moon phase. ... Tweets that mention Wonders of the February Night Sky | ... Astronotes . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

To do a 'long' list of a single file in your current directory: ls -l file1 -rw-r--r-- 2 unixjohn doc 3287 Apr 8 12:10 file1 . ... To do a long list of all the files in your current directory: ls -l -rw------- 1 erpl08 iss 4307 Jun 17 10:00 FAQ.xdh drwx------ 2 erpl08 iss 1024 Jun 17 10:00 SCCS -rw------- 1 erpl08 iss 15119 Jun 17 10:00 commands.xdh -rw------- 1 erpl08 iss 266 Jun 17 10:00 concepts.xdh . ...

Deriving the sine or cosine of an arbitrary angle takes a bit more math than is covered here. ... Note first of all that a right-angled triangle contains two angles. ... Because the side opposite to A is the one adjacent to (90њ- A), it follows that the sine of one angle is the cosine of the other, and vice versa: . ... Consider the triangle PQR (drawing) with all three angles equal to 60њ. ... If we want the angle A to grow in equal steps of 15 o , we still need the sine and cosine of 15њ and 75њ. ...

Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...

... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Remote Sensors . ... TS34C-M Wireless long range remote temperature sensor . ... Wireless long range remote temperature sensor #TS34C-M. Reads outdoor temperature in degrees Fahrenheit as well as humidity and transmits up to 328 feet (100 meters). ...

... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

Ground Support of RadioAstron . Control and Tracking Stations . RadioAstron satellite control (command transmission, telemetry, orbit measurements) will be conducted from Evpatoria and Bear Lake control stations. ... Coarse orbit measurements will be carried out from control stations. Each measurement takes ten minutes. ... Orbit measurements at tracking stations give only radial component of spacecraft velocity but the measurements are going continuously during observing sessions. ...

... Сегодня: 10 апреля 2016 г. Как известно, второй пилотируемый полет китайского космического корабля Shenzhou должен состояться в 2005 г. Теперь китайские тайконавты отправятся на околоземную орбиту вдвоем и полет их будет продолжаться 5-7 дней. ... Так что утяжеление корабля Shenzhou требует увеличения грузоподъемности ракеты. ... Второй китайский пилотируемый корабль полетит на модернизированной ракете Long March . ... АПЛ "Новомосковск" все же смогла запустить баллистическую ракету . ...

National Aeronautics and Space Administration . ... Bruce McCandless II (Captain, USN, Ret.) NASA Astronaut (former) . ... He was a member of the astronaut support crew for the Apollo 14 mission and was backup pilot for the first manned Skylab mission (SL-1/SL-2). ... A veteran of two space flights, McCandless has logged over 312 hours in space, including 4 hours of MMU flight time. ... With the completion of this flight McCandless logged 191 hours in space (including 4 hours of MMU flight time). ...

November 1-4, 1993 . ... On Nov 2 (b), strong evolution of the chain takes place during the LDE/CME event occurred in AR 7613 (see Figure 2 for details): new chain fragments are developed from the regions 1 and 2 eastward and westward respectively. (d)-(e) - Comparing the Nobeyama radio heliograms with the Yohkoh/SXT images, one can see that during three days the long-living chain between sources 1 and 2 coincides with a sharp SE boundary of the large coronal hole. ...

Full-Text Search . ... astro-ph . ... SAI VO . Search sort results by Date Relevance . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . Yin, H. X. Yi, Sukyoung K. Yirak, Kristopher . ... Yi, Lin . Yin, Z. -B. Yin, Peng-fei . Yi, T. F. Yin, J. Yildiz, M. Yin, Y. Yim, Kijeong . Yildiz, U. Yin, Fu-Rong . ... Yilmaz, A. Yi, Jiyune . Yilmaz, I. Yi, K. S. Yi, and Sukyoung . ... Yin, Q. F. Yilmaz, Huseyin . ... Yin, Lin . ...

. This is a new popup window - close it when you are done . Submitted by Paul Benni on 06/07/2013 22:28:46 . Comet PanSTARRS long anti-tail . 80mm refractor at f4.8 with ST-8300C ccd. May 27 Earth crossed the plane of the comet's orbit, giving a unique opportunity to observe the comet's long anti-tail. Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

... The first domestic liquid-propellant rocket engine with afterburning of generated gas in a combustion chamber allowed to achieve a specific impulse of up to 340 kgf s/kg in vacuum when using main components. ... Fuel components: . ... fuel . ... The engine has a more heat-intensive combustion chamber, therefore, RG-1 is used as fuel. When launching heavy-lift spacecraft, synthine can be used in the capacity of fuel without re-designing the engine. ... Official WEB-site of S.P.Korolev RSC Energia . ...