The probability of reconstructing a resonant system is related to the eccentricities and the resonance intensity. Our simulations show that the false alarm probabilities (FAPs) of a third planet are extremely small, while the two real planets can be fitted well with a signal-to-noise ratio (S/N) \gt 3. In accordance with observations, we consider two-Jupiter or two-super-Earth systems in 1:2, 2:3, and 3:4 MMRs. In particular, we can identify planet pairs in mean motion resonances (MMRs), which constrain the formation and evolution of planetary systems. Under such precision, astrometry can play an important role in detecting and characterizing exoplanets. It also has whole sky and constellation charts which will help you learn about the sky.Gaia is leading us into a new era with a high astrometry precision of ∼10 μas. Heavens-Above.Com An excellent resource for satellite observing.Also, check out The Amateur Telescope Makers Page to learn what goes into making a telescope. Sky and Telescope and Astronomy both have comprehensive telescope buying guides. The Amateur Sky Survey - A really interesting project!Īn Amateur Astronomer's Success Story! - Gianluca Masiĭo you have a space related question that nobody seems to be able to answer?īuying a telescope can be overwhelming as there are so many things to consider. Students for the Exploration and Development of Space.Light Pollution International Dark Sky Association IDA.International Occultation Timing Association (IOTA) IOTA.Comets (Comet observing and discovering) Comets.Planets/Moon (Planetary observing organizations) ALPO.Each link describes the organization somewhat and has a pointer to its respective page. The list of organizations below can be of great benefit to both the the individual and the organization as a whole. Events such as occultations, meteor showers, and even bright comets like Hale-Bopp, can be recorded on ordinary video cameras or film. Some require instrumentation that is now becoming widely available at lower prices. Several groups or organizations exist where almost anyone can participate, actually making a contribution to science. If you know of an unused telescope stashed away in someones attic, ask to borrow it! Binoculars are also a good starting instrument.Īlthough there are several professional observatories scattered throughout the world, complimented by a host of satellites dedicated to space science, several gaps exist in the area of observing astronomical objects that populate the cosmos. A pocket sized "field guide" or a star atlas is also an indispensible tool. Monthly subscription to popular magazines such as Astronomy Magazine and Sky and Telescope will keep you informed of upcoming celestial events. Undoubtedly, one of the best ways to see and use many telescopes and talk to other amateur astronomers, is to go to a "star party"! See the Calendar of Star Parties at Sky and Telescope. Provide dark skies, we can help introduce you to this awe inspiring activity! The hard part is finding dark skies that are conveniently located. Instruments used in ground-based astronomy range from the unaided eye, to common video cameras, to large computer-controlled telescopes using adaptive optics. Amateur astronomy is a fascinating hobby and can be an introduction to several practical and useful technologies.
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