... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

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• Bright planets meet at dusk | Astronomy.com
• A review turns into an observing session | Astronomy.com
• Observing | Astronomy.com

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

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A Terra Hunting Experiment at the INT Rationale To detect smaller mass planets (down to 1Mе) using the radial velocity technique, we need to be able to retrieve a signal in the limit of stellar variability noise. ... Such an observing program is not feasible with a non-dedicated telescope. To address this, we are proposing a "Terra Hunting Experiment" to be performed using a close-copy of the HARPS spectrograph installed on the 2.5m Isaac Newton Telescope (INT) in La Palma. ...

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• VLBI observations of the quasar 3C380
• Sub-mm and radio observations of water maser sources
• Abstract

... 1999 . I полугодие . 2000 . ... 2001 . ... 2002 . ... 2003 . ... 2015 . ... Последнее обновление: 28/12/2015 ...

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• GRB090726
• RCJ0311+0507
• HD965

Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... Forum List | ... Post Message | ... Posted by Bob Sal on July 25, 2003 19:55:06 UTC . ... BOB SAL . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Observational Stellar Astronomy - an Astronomy Net Article
• What I See - an Astronomy Net Observation_reports Forum Message
• Amateur Observers' Society Of New York, Inc., AstroGuide Listing

... Spacecraft . 29a. Satellite looking up . ... 29e. Explorers of distant space . Space Index . ... Many "down-looking" satellites also carry out local observations, among them Polar, Viking, Freja and satellites of the GOES and DMSP series. ... Other explorers of the distant magnetosphere have included the three ISEE spacecraft (International Sun-Earth Explorers), Polar in an elliptical polar orbit with cameras observing the polar aurora, and Image observing energetic neutral atoms. ...

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• Spacecraft Observing the Sun and the Heavens above
• Multipoint correlations of the solar wind parameters observed by several
• The Sun -- History

... Perhaps the most interesting satellites in this group are the ones sent into distant orbits, some of them extending well past the Moon--e.g. the WIND spacecraft pictured here. Among them is a long series of IMP s (Interplanetary Monitoring Platforms) which sampled the Earth's distant magnetic environment, the magnetosphere, and the surrounding interplanetary region; IMP-8 is still returning good data, more than 20 years after its launch. ...

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• The Sun -- History
• Spacecraft Observing the Sun and the Heavens above
• Sun [Oulu]

... Follow the handle of the Big Dipper away from the dipper's bowl until you get to the handle's last bright star. ... Across the Sun . ... A long solar filament stretches across the relatively calm surface of the Sun in this telescopic snap shot from April 27. ... Comet Churyumov Gerasimenko in Crescent . ... The Rosetta spacecraft arrived at the comet's craggily double nucleus last July and now is co-orbiting the Sun with the giant dark iceberg. ... Planetary Nebula Mz3: The Ant Nebula . ... April . ...

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• Journal "Peremennye Zvezdy"

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

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• Pulkovo NEO Page: Estimation of Accuracy of the Observations
• Pulkovo NEO Page: Ephemeris Support

... Our scientific interest is an accuracy of asteroid CCD observations obtained by amateurs and professional astronomers all over in the World. ... These data help us to analyse an accuracy of real CCD positions in the MPC Database. ... Do you test your observations of the small Solar System bodies permanently before sending them to the International Minor Planets' Center? ... Do you know a real accuracy of your positional CCD-observations in comparison with the other observatories' one ? ...

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... APT Activities and Science Results 3. ... APT Secretary Philip Edwards (ISAS) reviewed the aims of the APT (http://www.vsop.isas.ac.jp/apt/DefinitionAndAims.html). ... The Australia Telescope Compact Array, and Ceduna, Hartebeesthoek, Kashima, Mopra, Parkes, and Shanghai telescopes of the Asia-Pacific Telescope participated in these observations. ... In the absence of Tetsuo Sasao, Philip Edwards briefly described results of the APT 22 GHz observations conducted from October 1st to 5th, 1997. ...

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Next: Simulations Up: Period Determination Previous: False Alarms and . The term ``spectral window'' is used to describe the response of the data analysis system to a perfect sine wave. If one observes a non-variable object with finite signal--to--noise each night at exactly the same time (equivalently an object with a one day period), the periodogram analysis on it will return a power spectrum that is peaked at 1 day. ... Figure 1 shows a typical analysis, including the window function. ...