... We analysed the 11 cm Galactic plane survey carried out with the Effelsberg 100-m radio telescope for small diameter sources.. ... PL - in case of point-like sources: area smaller than 4.5'x4.5' . ... 3 number : Galactic position angle of the source ellipsoid; . ... 1 digit : positional error in units of 10" . 2 digit : integrated flux density error in units of 10% . 3 digit : size error in units of 20" . 4 digit : error of the Galactic positional angle error in units of 5^o ...

... Australia Telescope Compact Array Radio Imaging of the Proplyd-like Objects in the Giant HII Region NGC 3603'' . M?cke, A., Koribalski, B.S. , Moffat, A.F.J., Corcoran, M.F., Stevens, I.R. 2002, ApJ 571, 366 . ... Brenneman, L., Corcoran, M.F., Moffat, A.F.J., Marchenko, S.V., Ptak, A., Skalkowski, G., Mushotzky, R., Stevens, I.R., Mueke, A., Koribalski, B.S. , et al. ... Physical Properties of visual counterparts to X-ray sources in the giant HII region NGC 3603'' . ...

A press release on the Canadian Galactic Plane Survey was associated with this poster. ... Below are maps of HI emission, HISA, and 12 CO emission in the eastern 25% of the survey, given as projections along the velocity ( Figure 1 ) and latitude ( Figure 2 ) axes. ... 2000, A. J. , submitted . ... GIF | ... We are developing automated methods of locating HISA in velocity cubes by removing large-scale emission in space and velocity and flagging small-scale dark residuals. ...

We report on recent observations of molecular clouds in the tidal Magellanic Bridge; specifically, the Ы?kpc-long, tidally extended "tail" of the Small Magellanic Cloud. In particular, we identify an unusually high 12CO(3-2)/12CO(1-0) ratio of 2-3 to 1, toward one of the clouds, suggesting a warm and dense molecular material associated with imminent or current formation of stars. ...

This is a color composite image made by Karen Gloria at Hopkins Observatory using a 6-inch refractor and a 512x512 element CCD detector. ... This is a planetary nebula (see also the Planetary Nebula page on this server). It is relatively small, measuring approximately 8x4 arcminutes. Overall, the surface brightness of the extended ionized gas emission is one of the highest for any PN and therefore this object is easily seen through even small telescopes (including most finders). ...

Astronomy Picture of the Day . The Tail of the Small Magellanic Cloud . ... Credit: NASA / JPL-Caltech / STScI Explanation: A satellite galaxy of our Milky Way, the Small Magellanic Cloud is wonder of the southern sky, named for 16th century Portuguese circumnavigator Ferdinand Magellan . Some 200,000 light-years distant in the constellation Tucana, the small irregular galaxy's stars, gas, and dust that lie along a bar and extended "wing", are familiar in images from optical telescopes . ...

... Astrophysics Group . ... VSA . ... CAT . ... The Very Small Array is a custom-built radio telescope (operating between 26-36 GHz), designed expressly to make high resolution observations of the cosmic microwave background (CMB) radiation on angular scales around and below one degree. ... The VSA has been operated in ?compact array? and ?extended array? configurations (see the technical description below) and data collected to achieve high sensitivity in both regimes have been analysed. ... 1.75 GHz)...

... Up: Algorithms . ... Iterative algorithms with non-linear constraints are very attractive in image reconstruction with only a few strip-integrated projections. We present research into various versions of the iterative CLEAN algorithm for the solution of this problem. ... where is the object brightness distribution, is the fan (dirty) beam, and is the dirty (summary) image. ... We carried out the study of TC-CLEAN applied to image reconstruction with few projections. ...

scripts · Made a comparison with SCISIM ray trace that replicates each observation Main Analysis Steps · Select regions for each camera and run esas · Extract spectra and background · Made an . arf that is a guess for typical off axis angle ( fn(E) knowing only a single reflection occurs ) · Assume source spectrum of a LMXRB e.g. const*phabs*(diskbb+comptt) probably the detailed spectrum doesn't matter to 1st order · Also require an ...

Next: Extragalactic Gravitational Wave Background Previous: Transparency of the Stochastic . Let the sky be observed with a detector having a pencil beam diagram across. The number of stars per frequency decade that is swept by the detector is a function of celestial coordinates (say, galactic coordinates l , b ): . ... It is clear from the figure that for an all-sky detector the Galaxy becomes transparent above the frequency  Hz. ...

... 2010 January 7 . The Tail of the Small Magellanic Cloud . Credit: NASA / JPL-Caltech / STScI . Explanation: A satellite galaxy of our Milky Way, the Small Magellanic Cloud is wonder of the southern sky, named for 16th century Portuguese circumnavigator Ferdinand Magellan . Some 200,000 light-years distant in the constellation Tucana, the small irregular galaxy's stars, gas, and dust that lie along a bar and extended "wing", are familiar in images from optical telescopes . ...

About us . ... Telescopes . ... Apart from the 6-meter telescope BTA two small telescopes are operative at SAO: the 1-m and 0.6-m telescopes, both manufactured by Carl Zeiss, Jena, are located near the BTA. ... These telescopes are used for adjusting the equipment and techniques of observations used at the BTA. ... The observational time allocation and also a brief description of the equipment of the 1-m telescope, which is used either permanently or mainly on this telescope, are presented below. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... 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 . Springtime observing for small telescopes . ... small (4 inches or smaller) . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

V. I. Arnold, Ordinary differential equations. "; $programm =" . Processes described by ODE. ... General theory: existence and uniqueness of solutions in real and complex domains. Small parameter method. Linear theory. Phase flows of linear vector fields and exponentials of linear operators. Linear equations of higher order. ... Small amplitude oscillations. Stability of singular and fixed points. Limit cycles and their stability. ... Linear equations in the complex domain. ...

Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...

... We can help students grasp the significance of Hubble's extremely keen eye, and learn a bit about angles and math in the process, with the following in-class activity. ... Looking through binoculars or telescopes allows us to magnify a small section of the sky. To measure sizes or distances in that small section, astronomers divide a degree into 60 smaller pieces called arcminutes, and further subdivide minutes into 60 smaller sections called arcseconds. ... 30 feet = . ... 36 seconds . ...

APO has implemented a prototype guide camera for the 0.5-m Telescope. ... Guiding will continue unless a guide star is lost (clouds, high background from moon or twilight, or the telescope is slewed to another field). ... ACP maintains the guiding for the same field and will not re-acquire a guide star unless the field moves (example excessive tracking jumps) or ACP needs to re-center the object. ... The prototype guider is in shared-risk mode. ...

... Small spacecraft bus (SSB) is developed for small spacecraft, operating on near-Earth orbits or interplanetary trajectories (to the Moon, Mars etc.) ... The unit mass is 2.8 kg. Solar sensors with 130x2° FOV, 6 ang. min accuracy, and 2x0.34 kg mass. Star sensor with star-identifying controller, 56° FOV, 3 ang. min accuracy, and 0.51 kg mass. ... SSB is capable to control the spacecraft, including the attitude. ... The bus was fully manufactured for the Cosmos 1 (Solar Sail) project (2005). ...

... In reality, the measured amplitude is always smaller due to atmospheric turbulence and instrumental degradation, thus the amplitude measured on a science target has to be normalized by the amplitude measured on a calibrator. Calibrators are rarely unresolved, and if bright ones are needed, they tend to be big enough to require good estimates of their angular diameter. ... A catalog of bright calibrator stars for 200-m baseline near-infrared stellar interferometry (Merand et al. ...

Uranus ' innermost ten moons are: . ... C ordelia is the innermost of Uranus' known satellites: orbit : 49,752 km from Uranus diameter : 26 km mass : ? ... D iscovered by Voyager 2 in 1986. ... O phelia is the second of Uranus' known satellites: orbit : 53,764 km from Uranus diameter : 32 km mass : ? ... B ianca is the third of Uranus' known satellites: orbit : 59,165 km from Uranus diameter : 44 km mass : ? ... P uck and the other small moons are very dark (albedo less than 0.1). from LANL . ...